TY  - BOOK
AU  - GARG M.R.,BANSAL V.K.,TIWANA N.S.
TI  - ENVIRONMENTAL POLLUTION AND PROTECTION
SN  - 81-7100-527-6
U1  - 628.168 
PY  - 1995///
CY  - NEW DELHI
PB  - DEEP AND DEEP PUBLICATIONS
ER  -