TY  - BOOK
AU  - Agarwal, K.C.
TI  - Environmental biology
SN  - 8185031193
U1  - 577 21st ed
PY  - 1987///
CY  - Bikaner
PB  - Agro Botanical Publishers(India)
KW  - Ecosystem
KW  - System analysis-pollution
KW  - Natural resources
KW  - Environment education
ER  -