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Library of Congress Classification Outline


T:  Technology & Applied Sciences.
T Technology–General.
TA Engineering, general & civil.
TC Hydraulic engineering.
TD Environmental technology. Sanitation technology.
TE Highway engineering.
TF Railroad engineering.
TG Bridge construction.
TH Building construction.
TJ Mechanical engineering and machinery.
TK Electrical engineering. Electronics. Nuclear engineering.
TL Motor vehicles. Aeronautics. Astronautics.
TN Mining engineering. Metallurgy.
TP Chemical technology.
TR Photography.
TS Manufacturing sciences.
TT Handicrafts. Arts and crafts.
TX Home economics.