TR - Photography 4,507
TK - Electrical and Nuclear Engineering 725
T - General Technology 706
TD - Environmental Technology 650
TX - Home Economics 528
TL - Motor Vehicles and Aeronautics 452
TP - Chemical Technology 408
TA - General and Civil Engineering 341
TS - Manufactures 332
TN - Mining Engineering and Metallurgy 282
TT - Arts and Crafts 263
TJ - Mechanical Engineering and Machinery 221
TH - Building Construction 167
TC - Hydraulic and Ocean Engineering 117
TF - Railroad Engineering and Operation 57
TG - Bridge Engineering 32
TE - Highway Engineering 11