00782nam a2200277 a 450000100080000000500110000800800410001910000130006024500870007326000310016030000100019149000320020165000250023365000320025865000200029065000180031065000260032865000280035465000240038270000150040670000230042170000130044470000160045770000160047370000150048910005922014-02-22       1989    bl uuuu     u00u1 u    #d1 aGRAS, R.  aLe fait technique en agronomiebactivité agricole, concepts et méthodes d'étude  aParis (France): INRAc1989  a183p.  aAlternatives rurales (INRA)  aANALISIS DE SISTEMAS  aESTUDIOS DE CASOS PRACTICOS  aEXPERIMENTACION  aINVESTIGACION  aMODELOS DE SIMULACION  aSISTEMAS DE EXPLOTACION  aTECNICAS ANALITICAS1 aBENOIT, M.1 aDEFFONTAINES, J.P.1 aDURU, M.1 aLAFARGE, M.1 aLANGLET, A.1 aOSTY, P.L.