TY  - BOOK
AU  - Kumar, H D
TI  - Agricultural ecology 
SN  - 8176489948
U1  - 577.55 
CY  - New Delhi
PB  - APH publishing corporation 
KW  - Agriculture and the environment
KW  - Erosion and land degradation
KW  - Management of soils, water and nutrients
KW  - Abiotic stress
ER  -