00409nam a22001217a 450000500170000000800410001704000080005808200180006610000380008424500990012226000570022130000090027820250903144826.0230105b        |||||||| |||| 00| 0 eng d  cDDC  a631.8bRAJ/SO  aRajasekharan,P .,Nair,K,M. et. al  aSoil Fertility Assessment and Information Management for Enhancing Crop Productivity in Kerala  aThiruvananthapurambKerala State Planning Boarc2013  a522p