Indian science news associationSaha, M.N ; Ukil, A.C ; Ghosh, J.C ; Bose, D.M ; Ray ,P2013-08-242013-08-241949ISSN;0036-8156http://krishikosh.egranth.ac.in/handle/1/2039213en-USmanpower, biological phenomena, planting, diseases, land resources, productivity, irrigation, imports, marketing, research methodsJournal