00710nam a2200229Ia 4500003000400000008004100004020001800045082001600063245011000079250001200189260005700201300001200258650003400270650004100304650001900345650001600364650001400380700002000394700002100414700002300435700002200458OSt170901s2012 xx 000 0 und d a9788120330177 a631.8bH42S 0aSoil Fertility and Fertilizers : an introduction to nutrient management / cby John L. Havlin...[et. al.] a7th ed. a.- New Delhib: PHI Learning Private Limitedc, 2012 ax,515p. aTechnology (Applied Sciences) aAgriculture and Related Technologies aSoil Fertility aFertilizers aBook Bank aHavlin, John L. aBeaton, James D. aTisdale, Samuel L. aNelson, Werner L.