TY  - GEN
AU  - Dhaliwal, G.S.
AU  - Kler, G.S.
TI  - Principles of agricultural ecology
SN  - 8174930116
U1  - 630.277 DHA 
PY  - 1995///
CY  - Bombay
PB  - Himalya Publishing House
KW  - Agricultural ecology
KW  - Agriculture
KW  - Ecology
ER  -