Bhattacharyya, T and Mandal, C and Mandal, D K and Prasad, J and Tiwary, P and Venugopalan, M V and Pal, D K (2015) Agro-Eco Sub region Based Crop Planning in the Black Soil Regions and Indo-Gangetic Plains – Application of Soil Information System. Proceedings of the Indian National Science Academy, 81 (05). pp. 1151-1170. ISSN 0370-0046