00917nam0-22003011i-450-99000435138040332120050204154234.0000435138FED01000435138(Aleph)000435138FED0100043513819990604d1978----km-y0itay50------baitaa-------00---<<The >>agricultural systems of the worldan evolutionary approachD. B. GriggRepr.Cambridge , LondonCambridge University press1978.IX, 358 p.ill.24 cmCambridge geographical studies5338.16221itaGrigg,David<1934- >89260ITUNINARICAUNIMARCBK990004351380403321338.16 GRI 1I.st.r.c.2635FLFBCFLFBCAgricultural systems of the world486251UNINA