TY - BOOK AU - Sehgal, J.L. AU - Mandal, C. AU - Mandal, D.K. AU - Vadivelu, S. TI - Agro-ecological regions of India T2 - (Technical bulletin; NBSS Publ. 24) SN - 9788185460154 PY - 1990/// CY - Nagpur PB - National Bureau of Soil Survey and Land Use Planning ER -