TY  - BOOK
AU  - Agarwal, V K
AU  - Usha Gupta
TI  - Ecology : environmental biology
SN  - 8121923743
CY  - New Delhi
KW  - Aquatic ecosystems
KW  - Biodiversity
KW  - Biogeochemical cycles
KW  - Ecology -- Questions and answers
KW  - Environment
KW  - Environmental factors -- Abiotic, Biotic
KW  - Population ecology
KW  - Terrestrial ecosystems
KW  - Wildlife management
ER  -