00488nam a22001697a 4500003000400000008004100004020001500045082001400060100001700074245005900091250002000150260004700170300001300217650003400230650004100264650001300305OSt221112b        |||||||| |||| 00| 0 eng d  a8170964490  a630bS61P  aSingh, S. S.  aPrinciples & Paractices of Agronomy / cby S. S. Singh  a3rd ed. repring  a.- New Delhib: Kalyani Publishersc, 1998  axv,318p.  aTechnology (Applied Sciences)  aAgriculture and Related Technologies  aAgronomy