TY  - BOOK
AU  - Agrawal l, K.C.
TI  - Environmental biology
U1  - 577 21st ed
PY  - 1999///
CY  - Bikaner
PB  - Agro-Botanica
KW  - Ecosystem
KW  - Environment -Biology
KW  - Natural resources
KW  - Agriculture and fisheries
KW  - National parks, wildlife sanctuaries and biosphere reserves
ER  -