TH - Building Construction 610
T - General Technology 330
TX - Home Economics 271
TA - General and Civil Engineering 261
TK - Electrical and Nuclear Engineering 223
TR - Photography 120
TS - Manufactures 117
TT - Arts and Crafts 108
TD - Environmental Technology 73
TJ - Mechanical Engineering and Machinery 40
TL - Motor Vehicles and Aeronautics 27
TE - Highway Engineering 16
TP - Chemical Technology 16
TC - Hydraulic and Ocean Engineering 10
TN - Mining Engineering and Metallurgy 10
TG - Bridge Engineering 4
TF - Railroad Engineering and Operation 2