TY  - BOOK
AU  - Negi,S.S.
TI  - Envrironmental conservation
SN  - 9780203798416 (e-book : PDF)
U1  - 344.73 22
PY  - 1983///
CY  - Dehra Dun, India
PB  - Bishen Singh Mahendra.
KW  - Environmental
N1  - Includes references and index; Also available in print edition
ER  -