TY  - BOOK
AU  - DHALIWAL, G. S
TI  - Ecological agriculture and sustainable development: proceedings
U1  - SOILS 630.274 5 I-5E 
PY  - 1998///
PB  - Ludhiana
KW  - AGRICULTURAL ECOLOGY -- CONGRESSES
KW  - AGRICULTURE -- ECONOMIC ASPECTS -- CONGRESSE
ER  -