TY  - BOOK
AU  - PUROHIT S S
AU  - AGRAWAL A K
AU  - SHAMMI Q J
TI  - A TEXT BOOK OF ENVIRONMENTAL SCIENCES
SN  - 81-88826-14-6
U1  - 333.7 PUR 
CY  - HYDERABAD
KW  - ENVIRONMENTAL SCIENCE
KW  - ES
ER  -