T
except as below
Technology
(General)
T
55-339
Industrial
Safety, Patents, Trademarks
TA
Engineering
(General). Civil engineering (General)
TC
Hydraulic
engineering
TD
Environmental
technology. Sanitary engineering
TE
Highway
engineering, Roads and pavements
TF
Railroad
engineering and operation
TG
Bridge
engineering
TH
except as below
Building
construction
TH
1000-1725
Building
Construction
TH
4021-4970
Buildings:
Public Dwellings, use of
TJ
Mechanical
engineering and machinery
TK
except as below
Electrical
engineering. Nuclear engineering
TK
5101-6720
Telecommunication
TK
7885-7895
Computer
Engineering
TL
Motor
vehicles. Aeronautics. Astronautics
TN
Mining
engineering. Metallurgy
TP
Chemical
technology
TR
Photography
TS
Manufactures
TT
Handicrafts.
Arts and crafts
TX
except as below
Home
economics
TX
301-339
The
House (care, pest, finance)
TX
341-641
Nutrition
TX
645-953
Cookery
TX
955-985
Hotels,
Restaurants
TX
955-1107
Building
Maintenance, Homes, Camps