Agro-Ecological Regions of India
Mandal Mandal Sehgal Vadivelu
Agro-Ecological Regions of India - - New Delhi Oxford & IBH Publishing Co. 1990;1992 - 130
National Bureau of Soil Survey & Land Use Planning; ICAR
630.251/SEH
Agro-Ecological Regions of India - - New Delhi Oxford & IBH Publishing Co. 1990;1992 - 130
National Bureau of Soil Survey & Land Use Planning; ICAR
630.251/SEH