00516nam a2200169 a 450000100080000000500110000800800410001910000210006024500910008126000840017230000110025665000160026765000130028365000170029665000150031365000180032818422162016-09-27       1973    bl uuuu  m   00u1 u    #d1 aMARTÍNEZ, J. C.  aOn the economics of technological changebinduced innovation in Argentine agriculture.  aThesis (Doctor of Philosophy in Economics) - Iowa State university, Ames.c1973  a157 f.  aAgricultura  aEconomia  aFertilizante  aInovação  aMilho Hibrido