@inproceedings{icrisat4601,
       booktitle = {Proceedings of the First International Synlposium on Natural Resources Management for a Sustainable Agriculture},
            year = {1990},
           title = {The Soil Component In Sustainable Agriculture},
           pages = {64--88},
          author = {H Eswaran and S M Virmani},
             url = {http://oar.icrisat.org/4601/}
}