Understanding Call Numbers Guide
Q300-Q342 Cybernetics
R856-R857 Biomedical engineering
TA350 Mechanics
TA630-TA695 Structural engineering
TC160-TC181 Technical hydraulics
TJ212-TJ225 Control engineering systems
TJ265 Thermodynamics
TJ782-TJ793 Internal combustion engines
TJ809-TJ812 Solar energy
TK452-TK454.4 Electric circuits, electric networks
TK2000-TK2891 Dynamoelectric machinery including generators, motors, transformers
TK2896-TK2985 Production of electricity by direct energy conversion
TK3001-TK3521 Distribution or transmission of electric power
TK5101-TK6720 Telecommunication (satellites, computer networks, etc.)
TP248.13-TP248.65 Biotechnology