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Food processing and manufacture (204)
T10.5-11.9 Communication of technical information (6)
T11.95-12.5 Industrial directories (5)
T173.2-174.5 Technological change (3)
T175-178 Industrial research. Research and development (2)
T1-995 Technology (General) (120)
T201-342 Patents. Trademarks (2)
T351-385 Mechanical drawing. Engineering graphics (2)
T55.4-60.8 Industrial engineering. Management engineering (28)
T55-55.3 Industrial safety. Industrial accident prevention (5)
T57-57.97 Applied mathematics. Quantitative methods (5)
T57.6-57.97 Operations research. Systems analysis (2)
T58.4 Managerial control systems (1)
T58.5-58.64 Information technology (16)
T58.6-58.62 Management information systems (3)
T59-59.2 Standardization (2)
T61-173 Technical education. Technical schools (1)
TA1001-1280 Transportation engineering (9)
TA1-2040 Engineering (General). Civil engineering (General) (302)
TA1501-1820 Applied optics. Photonics (36)
TA164 Bioengineering (1)
TA166-167 Human engineering (1)
TA168 Systems engineering (2)
TA170-171 Environmental engineering (7)
TA174 Engineering design (3)
TA177.4-185 Engineering economy (1)
TA2001-2040 Plasma engineering. Applied plasma dynamics (1)
TA329-348 Engineering mathematics. Engineering analysis (3)
TA349-359 Mechanics of engineering. Applied mechanics (4)
TA365-367 Acoustics in engineering. Acoustical engineering (1)
TA401-492 Materials of engineering and construction. Mechanics of materials (96)
TA501-625 Surveying (5)
TA630-695 Structural engineering (General) (20)
TA703-712 Engineering geology. Rock mechanics. Soil mechanics. Underground construction (24)
TA715-787 Earthwork. Foundations (4)
TA Engineering (General). Civil engineering (General) (538)
TC160-181 Technical hydraulics (1)
TC1-978 Hydraulic engineering (22)
TC401-506 River, lake, and water-supply engineering (General) (4)
TC530-537 River protective works. Regulation. Flood control (15)
TC Hydraulic engineering. Ocean engineering (33)
TD1-1066 Environmental technology. Sanitary engineering (245)
TD159-168 Municipal engineering (1)
TD169-171.8 Environmental protection (8)
TD172-193.5 Environmental pollution (16)
TD194-195 Environmental effects of industries and plants (9)
TD201-500 Water supply for domestic and industrial purposes (89)
TD419-428 Water pollution (18)
TD429.5-480.7 Water purification. Water treatment and conditioning. Saline water conversion (49)
TD481-493 Water distribution systems (2)
TD511-780 Sewage collection and disposal systems. Sewerage (5)
TD783-812.5 Municipal refuse. Solid wastes (40)
TD878-894 Special types of environment Including soil pollution, air pollution, noise pollution (29)
TD895-899 Industrial and factory sanitation (14)
TD896-899 Industrial and factory wastes (10)
TD920-934 Rural and farm sanitary engineering (5)
TD Environmental technology. Sanitary engineering (567)
TE1-450 Highway engineering. Roads and pavements (25)
TE177-178.8 Roadside development. Landscaping (1)
TE200-205 Materials for roadmaking (4)
TE210-228.3 Construction details Including foundations, maintenance, equipment (9)
TE250-278.8 Pavements and paved roads (5)
TE Highway engineering. Roads and pavements (39)
TF1-1620 Railroad engineering and operation (5)
TF200-320 Railway construction (2)
TF501-668 Railway operation and management (2)
TF Railroad engineering and operation (7)
TG1-470 Bridge engineering (3)
TG Bridge engineering (4)
TH1000-1725 Systems of building construction Including fireproof construction, concrete construction (15)
TH1-9745 Building construction (47)
TH2025-3000 Details in building design and construction Including walls, roofs (1)
TH4021-4977 Buildings: Construction with reference to use Including public buildings, dwellings (5)
TH6014-6081 Environmental engineering of buildings. Sanitary engineering of buildings (2)
TH7005-7699 Heating and ventilation. Air conditioning (9)
TH845-895 Architectural engineering. Structural engineering of buildings (3)
TH900-915 Construction equipment in building (1)
TH Building construction (70)
TJ1040-1119 Machinery exclusive of prime movers (4)
TJ1125-1345 Machine shops and machine shop practice (1)
TJ1-1570 Mechanical engineering and machinery (124)
TJ1480-1496 Agricultural machinery. Farm machinery (3)
TJ163.26-163.5 Energy conservation (3)
TJ181-210 Mechanical movements (1)
TJ210.2-211.47 Mechanical devices and figures. Automata. Ingenious mechanisms. Robots (General) (48)
TJ212-225 Control engineering systems. Automatic machinery (General) (6)
TJ227-240 Machine design and drawing (2)
TJ255-265 Heat engines (3)
TJ266-267.5 Turbines. Turbomachines (General) (1)
TJ268-740 Steam engineering (1)
TJ807-830 Renewable energy sources (40)
TJ836-927 Hydraulic machinery (5)
TJ950-1030 Pneumatic machinery (1)
TJ Mechanical engineering and machinery (249)
TK1001-1841 Production of electric energy or power. Powerplants. Central stations (24)
TK1-9971 Electrical engineering. Electronics. Nuclear engineering (313)
TK2000-2891 Dynamoelectric machinery and auxiliaries Including generators, motors, transformers (4)
TK2896-2985 Production of electricity by direct energy conversion (10)
TK452-454.4 Electric apparatus and materials. Electric circuits. Electric networks (5)
TK4601-4661 Electric heating (1)
TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television (112)
TK7800-8360 Electronics (131)
TK7885-7895 Computer engineering. Computer hardware (18)
TK8300-8360 Photoelectronic devices (General) (18)
TK9001-9401 Nuclear engineering. Atomic power (3)
TK Electrical engineering. Electronics Nuclear engineering (591)
TL1-4050 Motor vehicles. Aeronautics. Astronautics (15)
TL1-484 Motor vehicles. Cycles (7)
TL500-777 Aeronautics. Aeronautical engineering (6)
TL Motor vehicles. Aeronautics. Astronautics (26)
TN1-997 Mining engineering. Metallurgy (27)
TN263-271 Mineral deposits. Metallic ore deposits. Prospecting (5)
TN400-580 Ore deposits and mining of particular metals (1)
TN600-799 Metallurgy (3)
TN799.5-948 Nonmetallic minerals (10)
TN Mining engineering. Metallurgy (41)
TP1080-1185 Polymers and polymer manufacture (16)
TP1-1185 Chemical technology (586)
TP155-156 Chemical engineering (34)
TP200-248 Chemicals: Manufacture, use, etc. (37)
TP248.13-248.65 Biotechnology (61)
TP250-261 Industrial electrochemistry (4)
TP315-360 Fuel (41)
TP480-498 Low temperature engineering. Cryogenic engineering. Refrigeration (2)
TP500-660 Fermentation industries. Beverages. Alcohol (73)
TP670-699 Oils, fats, and waxes (25)
TP690-692.5 Petroleum refining. Petroleum products (3)
TP751-762 Gas industry (1)
TP785-869 Clay industries. Ceramics. Glass (6)
TP875-888 Cement industries (3)
TP890-933 Textile bleaching, dyeing, printing, etc. (3)
TP934-945 Paints, pigments, varnishes, etc. (1)
TP Chemical technology (935)
TR1-1050 Photography (20)
TR287-500 Photographic processing. Darkroom technique (1)
TR624-835 Applied photography Including artistic, commercial, medical photography, photocopying processes (9)
TR845-899 Cinematography. Motion pictures (9)
TR Photography (36)
TS1080-1268 Paper manufacture and trade (2)
TS1-2301 Manufactures (81)
TS1300-1865 Textile industries (3)
TS155-194 Production management. Operations management (18)
TS1870-1935 Rubber industry (4)
TS1950-1982 Animal products (8)
TS195-198.8 Packaging (2)
TS200-770 Metal manufactures. Metalworking (13)
TS2120-2159 Cereals and grain. Milling industry (2)
TS780-788 Stonework (1)
TS800-937 Wood technology. Lumber (23)
TS840-915 Wood products. Furniture (5)
TS920-937 Chemical processing of wood (7)
TS940-1047 Leather industries. Tanning (1)
TS Manufactures (102)
TT180-200 Woodworking. Furniture making. Upholstering (1)
TT1-999 Handicrafts. Arts and crafts (10)
TT490-695 Clothing manufacture. Dressmaking. Tailoring (3)
TT697-927 Home arts. Homecrafts Including sewing, embroidery, decorative crafts (2)
T Technology (4526)
T Technology (General) (339)
TT Handicrafts Arts and crafts (16)
TX1-1110 Home economics (1166)
TX301-339 The house Including arrangement, care, servants (1)
TX341-641 Nutrition. Foods and food supply (1069)
TX642-840 Cooking (56)
TX901-946.5 Hospitality industry. Hotels, clubs, restaurants, etc. Food service (43)
TX Home economics (1185)