00513nam a22001451a 45000010005000000030004000050050017000090080041000260500017000671000101000842450097001852640021002823000010003036500054003136808OSt20260204212105.0060724s1994||||cr ||||||b||||||||||spa||  a338.63 W898s  aWorkshop in the aplication of social sciences in production system research: seeking methodology  aSocia sciencies and agricultural research: a systems approach: Proceedings / Manuel E Ruíz  aCosta Rica: IICA  a142 p  a1.Sistemas de Producción 2.Ciencias SocialesÌ