Agriculture and environment
Kansal, B.D.
Agriculture and environment - Ludhiana National Agricultural Technology Information Centre 1996 - 22cm; 248
AGRICULTURE -- ENVIRONMENT ASPECTS
AGRICULTURAL ECOLOGY AGRICULTURE -- ENVIRONMENT ASPECTS
630.274.5 K11A
Agriculture and environment - Ludhiana National Agricultural Technology Information Centre 1996 - 22cm; 248
AGRICULTURE -- ENVIRONMENT ASPECTS
AGRICULTURAL ECOLOGY AGRICULTURE -- ENVIRONMENT ASPECTS
630.274.5 K11A