00542nam a22001817a 4500003000400000008004100004082001900045100001700064245014300081260003900224300001000263502001700273650001300290650002000303650001500323650001100338650001100349OSt260506b        |||||||| |||| 00| 0 eng d  a633.1889bS48N  aSinha, S. S.  aNitrogen Fertilization and Efficacy of Herbicides Under Different Methods of Upland Rice Cultivation in Calcareous Soil / cby S. S. Sinha  a.- Pusa, Samastipurb: RAUc, 1990  a177p.  bPh. D.d1990  aAgronomy  aCalcareous Soil  aHerbicides  aThesis  aPh. D.