00512nam a2200181Ia 4500020001500000082002300015245005700038260004200095690000600137500000500143700000500148100001800153300001300171952010500184964001700289921000900306999001500315  a0198594526  a338.10184bUP71.AP  aAgricultural production economics and resource useb  aLondonbOxford University Pressc1976  a   a  a  aUpton, Martin  ax, 357p.  00104070aISIbISId1998-08-17l0o338.10184 UP71.APpDP11151r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a4465  c4465d4465