00450nam a22001577a 4500003000400000008004100004082001800045100002100063245009600084260003200180300001000212502001500222650001700237650002700254650001100281OSt260610b        |||||||| |||| 00| 0 eng d  a631.841bY-1S  aYadav, Kameshwar  aStudies on Methods of Increasing Efficiency of Urea Under Waterlogged Paddy Field Condition  aPusa, SamastipurbRAUc1977  a105P.  bMsc.d1977  aSoil Science  aAgricultural Chemistry  aThesis