00410nam a2200133Ia 4500008004100000082001600041100001600057245004000073260006100113300000800174650004100182650003400223653001900257170901s1976    xx            000 0 und d  a631.8bK12S  aKanwar, J.S 0aSoil FertilitybTheory and Practice  aNew DelhibIndian Council of Agricultural Researchc1976  a533  aAgriculture and related technologies  aTechnology (Applied sciences)  aSoil fertility