00458nam a22001457a 4500003000400000008004100004082001800045100001700063245014800080260003200228300000900260502001500269650001700284650001100301OSt260603b        |||||||| |||| 00| 0 eng d  a631.417bS94I  aKumar, Sunil  aIntegrated Management of Organics and Chemicals Fertilizers for Sustainging Soil Fertility and Crop Productiviity in Rice-Wheat Cropping System  aPusa, SamastipurbRAUc2002  a89P.  bMsc.d2002  aSoil Science  aThesis