631.4225483
R111S
               Soil fertility assessment and information management for enhancing crop productivity in Kerala \ edited by P Rajasekharan, K M Nair, G Rajshree, Suresh Kumar and M C Narayan kutty - Kerala : kerala State Planning Board, 2013.
               xii,522p. 23cm
                ISBN:

C20139
                Subjects: SOIL CONSERVATION; FERTILIZERS; SOIL ECOLOGY.