00493    a2200181   4500020001800000082001700018100002000035245007500055250000800130260003600138300002500174650001900199650001000218650001700228700002100245700002300266700002200289  a9788120348684  a631.422bSOI  aHavlin, John L.  aSoil fertility and fertilizersban introduction to nutrient management  a8th  aDelhibPHI Learningc1956g2014  avii,518p.billc28cm  aSoil fertility  aSoils  aSoil science  abEATON, jAMES d.  aTisdale, Samuel L.  aNelson, Werner L.