Nayak, R K, Sugyata Shivhare, B Jena, J Das, S Mohapatra, S K Panda, Rajendra Kumar Panda, and A K Shukla. 2016. “Georeferenced Distribution of Micro-Secondary Nutrients in Soils of North Central Plateau Zone of Odisha and Identification of Soil Related Production Constraints in Paddy”. ORYZA-An International Journal of Rice 53 (3). http://epubs.icar.org.in/index.php/OIJR/article/view/71204.