00546nam a22001817a 4500003000400000008004100004082001700045100001800062245014800080260003900228300001000267502001700277650001300294650002000307650001500327650001100342650001100353OSt260504b        |||||||| |||| 00| 0 eng d  a633.18bT30P  aThakur, K. N.  aPhosphorus Fertilization and Efficacy of Herbicides in Different Methods of Upland Rice Cultivation in Calcareous Soil / cby Kedar Nath Thakur  a.- Pusa, Samastipurb: RAUc, 1991  a178p.  bPh. D.d1991  aAgronomy  aCalcareous Soil  aHerbicides  aThesis  aPh. D.