00564nam a2200157 a 450000100080000000500110000800800410001910000190006024501120007926000290019130000100022049000360023052001060026665000160037265000180038819228202012-04-27       1978    bl uuuu     u0uu1 u    #d1 aOPPEN, M. von.  aAgricultural marketing and aggregate productivityba dimension to be added to agricultural market research.  aHyderabad: ICRISATc1978  a20 p.  a(ICRISAT. Discussion Paper, 3).  aMarket research at present; Research to assess impact of marketing systems on aggregate productivity.  aAgricultura  aProdutividade