00459naa a2200157 a 450000100080000000500110000800800410001910000160006024500780007626000090015465000250016365000140018870000270020270000190022977300530024810126762021-03-15       2002    bl uuuu     u00u1 u    #d1 aOZELAME, O.  aO enfoque sistémico na extensaobdesde sistemas "Hard" a sistemas "Soft"  c2002  aANALISIS DE SISTEMAS  aEXTENSION1 aDESSIMON MACHADO, J.A.1 aDE HEGEDUS, P.  tAgrociencia Uruguay, 2002gv. 6, no. 2, p. 53-60