Kumar, H.D. .
Agricultural ecology / by H.D. Kumar. - New Delhi : A P H Publishing Corporation , 2006 - xii, 314p :
81-7648-994-8
Agricultural- Ecology
J:(G:5) / P6
Agricultural ecology / by H.D. Kumar. - New Delhi : A P H Publishing Corporation , 2006 - xii, 314p :
81-7648-994-8
Agricultural- Ecology
J:(G:5) / P6