01224nam a2200265 a 450000100080000000500110000800800410001910000170006024500710007726000440014830000100019249000930020252004520029565000160074765000140076365000160077765000180079365000270081165300180083865300170085665300130087365300220088665300230090865300270093117507331993-11-16       1993    bl uuuu      00u1 u    #d1 aCOBBE, R. V.  aAgricultural knowledge & information systemsbconcepts and models.  aMadison : University of Wisconsinc1993  a100p.  a(University of Wisconsin, Madison. Department of Agricultural Journalism. Bulletin, 45).  aOf systems and models. The systems approach to agricultural technology research extension and use. Science and technology: conceptual distinction and functional complementary. Data, information, knowledge, communication and change. A systems approach to communication. The relevance of the marketing concept for agricultural research and extension. Agricultural systems. Strategic approaches to induced technological innovation. Modeling the AKIS.  aagriculture  aknowledge  aAgricultura  aComunicação  aDifusão de Tecnologia  aCommunication  aConhecimento  aExtensao  aExtension service  aInformation system  aSistemas de informacao