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Library of Congress Subject Areas (2120)
- A General Works (3)
  - AM Museums (General). Collectors and collecting (General) (3)
    - AM101 Paleography (1)
- B Philosophy. Psychology. Religion (15)
  - BF Psychology (15)
    - BF697.5 Self-esteem (2)
    - BF713 Developmental psychology and motivation (13)
- C Auxiliary Sciences of History (1)
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- G Geography. Anthropology. Recreation (70)
  - G Geography (General) (59)
    - G109.5 Global Positioning System (5)
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    - Tourism--Marketing (47)
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      - GN451-477.7 Intellectual life inc Communication (7)
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- H Social Sciences (914)
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      - HD58.82 Organizational learning (3)
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  - HF Commerce (605)
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      - HF1040.1 Health products (1)
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      - HF5415.332 Young adult consumers (6)
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    - HF5823 Branding (Marketing) (71)
  - HG Finance (203)
    - HG1501-3550 Banking (52)
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    - HG4001-4285 Finance management. Business finance. (63)
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  - HM Sociology (57)
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      - HM742.1 Social Media (24)
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- K Law (2)
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- L Education (23)
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- M Music and Books on Music (3)
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- N Fine Arts (27)
  - NA Architecture (22)
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  - NX Arts in general (2)
- P Language and Literature (16)
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    - PN1993 Motion Pictures (5)
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- Q Science (252)
  - Q Science (General) (8)
    - Q325.5 Machine learning (6)
    - Q334-Q342 Artificial intelligence (1)
    - Q387.4 Ontologies (Information retrieval) (1)
  - QA Mathematics (144)
    - QA268 Cryptography (1)
    - QA297.5 Defect correction methods (Numerical analysis) (1)
    - QA447 Geometry--Data processing (2)
    - QA75 Electronic computers. Computer science (5)
    - QA76 Computer software (122)
      - QA76.585 Cloud computing (2)
      - QA76.65 Visual programming (Computer science) (3)
      - QA76.73 Programming languages (Electronic computers) (2)
      - QA76.75 COBIT (Information technology management standard) (6)
      - (14)
        QA76.761 Android (Electronic resource) (7)
        QA76.762 Computer software--Development (2)
      - QA76.87 Neural networks (Computer science) (10)
      - (63)
        QA76.754 Software architecture (1)
        QA76.91 Data mining (14)
        QA76.93 Computer networks--Security measures (13)
        QA76.94 Electronic data processing--Auditing (7)
        QA76.95 User interfaces (Computer systems)--Design (3)
    - QA841-QA842 Kinematics (1)
    - QA843-QA871 Dynamics (2)
    - QA9.64 Fuzzy logic (10)
  - QC Physics (18)
    - QC244 Ultrasonic waves (3)
    - QC271 Temperature measurements (6)
    - QC373 Optical detectors (1)
    - QC411.4 Laser Interferometer (6)
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    - QC801 Evaporation (1)
  - QD Chemistry (17)
    - QD281 Pyrolysis (1)
    - QD305 Fatty acids in human nutrition (6)
    - QD321 Cornstarch (1)
    - QD325 Saponins (2)
    - QD341 Pyrogallol (2)
    - QD415 Natural products (1)
    - QD516 Dust Explosions (1)
    - QD543 Solubility (2)
    - QD561 Metal ions (1)
  - QH Natural history (3)
    - QH513 Biomechanics (1)
    - QH585 Cell culture (1)
    - QH588 Stem cells (1)
  - QK Botany (41)
    - QK1 Annona (1)
    - QK495 Lemongrass (5)
    - QK570.2 Marine algae (1)
    - QK830 Japanese morning glory--Flowering (2)
    - QK898 Anthocyanins (34)
    - QK938 Mangrove plants (1)
  - QM Human anatomy (3)
    - QM25 Ultrasonic imaging (2)
  - QP Physiology (24)
    - QP105 Blood pressure (3)
    - QP141 Nutrition (6)
    - QP144 Coconut oil (4)
      - QP144.1 Coconut water--Health aspects (2)
    - QP246 Colostrum (2)
    - QP303 Gait disorders (1)
    - QP33 Muscle contraction (1)
    - QP601 Vitamin C (5)
      - QP601.1 Papain (2)
    - QP752 Fatty acids in human nutrition (2)
    - QP801 Phenols--Physiological effect (1)
    - QP84 Human growth (1)
  - QR Microbiology (6)
    - QR171 Prebiotics (1)
    - QR177 Multidrug resistance (1)
    - QR185.5 Antibody-dependent cell cytotoxicity (2)
    - QR186.7 Antibody diversity (1)
- R Medicine (204)
  - R Medicine (General) (81)
    - R856 Biomedical engineering (65)
    - R858 Medical informatics (2)
  - RA Public aspects of medicine (26)
    - RA0421 Public health. Hygiene. Preventive Medicine (4)
    - RA565 Environmental health (1)
    - RA644 Malaria, COVID-19 (10)
    - RA645 Diabetes (1)
    - RA778 Beauty, Personal (2)
    - RA960 Medical centers. Hospitals. Dispensaries. Clinics (7)
    - RA965.6 Hospital patients--Safety measures (3)
  - RB Pathology (2)
    - RB52.5 Saliva--Analysis (1)
  - RC Internal medicine (30)
    - RC0254 Neoplasms. Tumors. Oncology (including Cancer) (3)
    - RC124.48 Chikungunya (1)
    - RC165 Tropical diseases (4)
    - RC168 Papillomavirus diseases (1)
    - RC280 Cervix uteri—Cancer (3)
    - RC607 AIDS (Disease)--Treatment (1)
    - RC660 Diabetes (4)
    - RC683.5 Electrocardiography (3)
    - RC735 Respiratory therapy (1)
    - RC740 Respiratory infections (1)
    - RC77.5 Electromyography (3)
    - RC776 SARS (Disease) (1)
    - RC78.7 Tomography--Data processing (2)
    - RC925 Diseases of the musculoskeletal system (1)
  - RD Surgery (1)
    - RD561 Knee (1)
  - RE Ophthalmology (1)
    - RE51 Eye--Care and hygiene (1)
  - RG Gynecology and obstetrics (1)
    - RG493.5 Breast--Radiography (1)
  - RJ Pediatrics (1)
    - RJ216 Infants--Nutrition (1)
  - RM Therapeutics. Pharmacology (32)
    - RM237.85 Sugar-free snack foods (2)
    - RM262 Anti-infective agents (2)
    - RM267 Antibiotics--Research (2)
    - RM409 Antibacterial agents (2)
    - RM666 Herbs--Therapeutic use (16)
      - RM666.1 Ginger (2)
      - RM666.2 Herbal medicine (2)
    - RM849 Radiation dosimetry (8)
  - RS Pharmacy and materia medica (94)
    - RS160 Plant extracts (69)
    - RS164 Materia medica, Vegetable (2)
    - RS192 Pharmaceutical technology (31)
    - RS201 Capsules (Pharmacy) (1)
  - RT Nursing (1)
  - RV Botanic, Thomsonian, and eclectic medicine (2)
- S Agriculture (51)
  - S Agriculture (General) (12)
    - S21 Eggplant (1)
    - S565.88 Agritourism (1)
    - S698.5 Plant material cutting machinery (6)
  - SB Plant culture (34)
    - SB433.2 Lawn mowers (1)
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    - SB183 Field crops (5)
    - SB191 Rice (5)
      - SB191.1 Corn (1)
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    - SB299 Palm Oil (10)
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  - SF Animal culture (1)
    - SF275 Yogurt (1)
  - SH Aquaculture. Fisheries. Angling (5)
    - SH335 Fishery processing (4)
      - SH335.8 Fisheries--Waste disposal (1)
- T Technology (1431)
  - T Technology (General) (300)
    - T174.5 Technology--Risk assessment (1)
    - T385 Solidworks (1)
    - T55.4 Industrial engineering. Management engineering (124)
    - T57.9 Queuing theory (2)
    - T58.5 Information technology (144)
    - T58.6 Management information systems (25)
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    - T59.7 Human-machine systems (1)
  - TA Engineering (General). Civil engineering (General) (76)
    - TA1637 Image processing (17)
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    - TA1653 Human face recognition (Computer science) (4)
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    - TA1707 X-ray lasers (3)
    - TA213 Engineering machinery, tools, and implements (32)
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  - TC Hydraulic engineering. Ocean engineering (2)
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  - TD Environmental technology. Sanitary engineering (20)
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  - TH Building construction (9)
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  - TJ Mechanical engineering and machinery (537)
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    - TJ163.12 Mechatronics (371)
    - TJ210 Robots (General) (115)
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    - TJ217 Adaptive control systems (6)
    - TJ223 Microcontrollers (65)
      - TJ223.1 Arduino (Programmable controller) (27)
    - TJ266 Turbines. Turbomachines (General) (7)
    - TJ807 Renewable energy sources (58)
    - TJ836 Hydraulic machinery (2)
    - TJ853.4 Microfluidic devices (1)
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  - TK Electrical engineering. Electronics Nuclear engineering (125)
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    - TK5101 Telecommunication (5)
    - TK5103 Mobile computing (21)
      - TK5103.483 Wireless communication systems--Technological innovations (8)
      - TK5103.48323 Indoor positioning systems (Wireless localization) (1)
      - TK5103.4837 Mobile device forensics (4)
      - TK5103.4874 Roaming (Telecommunication) (1)
    - TK5105 Web Sites-Design (27)
      - TK5105.59 Intrusion detection systems (Computer security, Firewalls (7)
      - TK5105.73 Text messages (Cell phone systems) (2)
      - TK5105.875 Internet (10)
      - TK5105.8835 Internet domain names (1)
      - TK5105.888 Web personalization (2)
      - TK5105.88815 Semantic Web (1)
      - TK5105.8884 Blogs (1)
    - TK6564.4 Smartphones (2)
    - TK6565 GPS receivers (2)
    - TK6570 Radio frequency identification systems (3)
    - TK6681 Video games--Equipment and supplies (2)
    - TK7872 Sensor Networks (15)
    - TK7882 Biometric identification (5)
    - TK7895 Smart cards ; FPGA (4)
  - TL Motor vehicles. Aeronautics. Astronautics (53)
    - TL230 Trucks (1)
    - TL151.6 Automobiles--Fuel consumption (1)
    - TL152 Automobiles--Maintenance and repair (27)
      - TL152.1 Automobile driving simulators (3)
      - TL152.7 Automobiles--Navigation systems (5)
      - TL152.8 Automated vehicles (16)
    - TL242 Traffic signs and signals (1)
    - TL259 Automobiles--Steering-gear (5)
    - TL269 Automobiles--Antilock brake systems (1)
    - TL270 Tires (2)
    - TL574 Lift (Aerodynamics) (1)
    - TL589.2 Accelerometers (5)
    - TL691.1 Airplanes--Maintenance and repair--Technological innovations (1)
    - TL694 Aerospace telemetry (4)
  - TN Mining engineering. Metallurgy (7)
    - TN672 Metals--Heat treatment (1)
  - TP Chemical technology (258)
    - TP1180 Antimicrobial polymers (2)
    - TP155 Chemical engineering (27)
    - TP156 Extraction (Chemistry) (15)
    - TP157-TP159 Extractors (Chemical engineering) (5)
    - TP159 Chemical detectors (5)
      - TP159.1 Heterogenous catalysts (2)
    - TP248 Starch (4)
    - TP315 Fuel (9)
    - TP359 Biogas (3)
    - TP360 Biomass (3)
    - TP368 Food processing and manufacture (170)
    - TP371 Food -- Preservation (15)
      - TP371.1 Food--Effect of heat on (5)
      - TP371.44 Fermented soyfoods (2)
    - TP374 Food--Packaging (2)
    - TP413 Molasses (1)
    - TP440 Fruit (3)
    - TP445.5 Carrageenan (1)
    - TP451 Low-cholesterol foods (1)
    - TP456 Coloring matter in food (1)
    - TP500 Fermentation industries. Beverages. Alcohol (9)
    - TP548.2 Wine and wine making (1)
    - TP640 Chocolate (2)
    - TP645 Coffee -- Processing (9)
    - TP671 Oils and fats--Analysis (1)
    - TP684 Palm oil (8)
      - TP684.2 Rice oil (2)
    - TP959 Citrus oils (5)
    - TP973 Glycerin (1)
    - TP983 Cosmetics--Analysis (7)
  - TR Photography (1)
    - TR708 Medical photography (1)
  - TS Manufactures (99)
    - TS1109 Quality Control (18)
    - TS155 Lean manufacturing (24)
      - TS155.6 Rapid prototyping (2)
    - TS157.5 Production scheduling (2)
    - TS171 Product design (17)
      - TS171.8 Three-dimensional printing (4)
    - TS178 Assembly-line balancing (11)
    - TS180 Materials handling (4)
    - TS183 Manufacturing processes (9)
    - TS186 Plant layout (1)
    - TS192 Plant maintenance--Management (9)
    - TS198 Encapsulation (4)
      - TS198.3 Plastics in packaging (2)
    - TS205 Metals--Heat treatment (3)
    - TS380 Cutlery (3)
    - TS58.62 Decision support systems (2)
  - TX Home economics (277)
    - TX341 Nutrition. Foods and food supply (4)
    - TX377 Dairy products (1)
    - TX531 Hazard Analysis and Critical Control Point (Food safety system) (1)
    - TX546 Food--Sensory evaluation (4)
    - TX553 Food additives (2)
    - TX558 Tempeh (9)
    - TX560 Oils and fats, Edible--Deterioration (3)
    - TX631 Food tourism (5)
    - TX724.5 Cooking, Indonesia (1)
    - TX795 Ice cream, ices (3)
    - TX799 Popcorn (1)
    - TX815 Fruit juices (3)
    - TX851 Dining-room service (5)
    - TX901 Hospitality industry (217)
    - TX911 Hotel management (53)
    - TX921 Caterers and catering (1)
    - TX946.5 Food service (28)
- U Military Science (3)
  - U Military Science (General) (3)
    - UG Military engineering. Air forces (3)
      - UG1242 Drone aircraft (2)
      - UG615 Vehicles, Remotely piloted (2)
- Z Bibliography. Library Science. Information Resources (4)
  - Z106.5 Museum Nasional (Indonesia) (1)
  - ZA Information resources (3)
    - ZA4450 Databases (3)