00654nam a2200181Ia 4500008004100000082001400041100001900055245005300074260004500127300001300172490004700185600004200232600003400274650004600308942000700354952009400361999001700455140224s9999    xx            000 0 und d  a338:63 L5  aHeady, Earl O.  aSpatial sector programming models in agriculture  aAmesbIowa  State University Pressc1975  axx,484p.  aAgriculture and state-mathematical models.  a Earl O.Heady (and) Uma K.Srivastava.  aSrivastava, Uma K., jt. auth.  aAgriculture and state-mathematical models  cBK  00104070aKSDbKSDd2014-02-24l0o338:63 L5p1591r2014-02-24 00:00:00w2014-02-24yBK  c96015d96015