TY  - BOOK
AU  - Seth,G.K.
TI  - Know your environment
U1  - 614.76 
PY  - 1979///
CY  - New Delhi
PB  - National Pub House
KW  - Air
KW  - Pollution
KW  - Meteorological aspects
KW  - Factory and trade waste
KW  - Management
KW  - Environmnetal health
KW  - Environmental aspects
N1  - Includes index
ER  -