TY  - GEN
AU  - Sharma, P. D.
TI  - Ecology and environment
SN  - 81-7133-814-3 :
U1  - 574.5 
PY  - 2005///
CY  - Meerut
PB  - Rastogi publications
KW  - ECOLOGY
N1  - Includes appendices, glossary and index
ER  -