Technology -- Environmental Technology &
Sanitary Engineering
(TD)

Q-Science

R-Medicine

S-Agriculture

T-Technology

U-Military

V-Naval

SELECT	TD
Environmental Technology & Sanitary Engineering (General)	1-158
Municipal Engineering	159-167
Environmental Protection	169-171.5
Environmental Pollution	172-196
Water Supply for Domestic and Industrial Purposes (Water Quality Treatment, Saline Water Conversion, etc.)	201-500
Sewage Collection and Disposal Systems	511-780
Municipal Refuse & Solid Wastes	785-812.5
Street Cleaning & Litter Removal	813-870
Special Types of Pollution (Soil, Air, Noise)	878-894
Industrial Sanitation & Industrial Wastes	895-899
Rural and Farm Sanitary Engineering	920-931
CyberStacks(sm)	TD