TY  - BOOK
AU  - "Velayutham, M."
AU  - "Mandal, D. K. ""Champa, Mandal"
TI  - Agro-ecological subregions of India for planning and development
SN  - 818546054x
U1  - 634 
PY  - 1999///
CY  - Nagpur
PB  - National Bureau of soil survey and land use planning (ICAR)
ER  -