00794nam a2200229Ia 4500001001100000005001700011008004100028020001500069020001800084050002000102090001400122245011500136260003700251300007100288504004200359650002600401650002500427650004700452653001600499653003400515999001500549000001276020251012174523.0  730905s1970    enkabf   b    000 0 eng  a0701113618  a978070111361200aS439b.D97 197000a338.121810aFarming systems of the world,cby A.N. Duckham and G.B. Masefield; assisted by R.W. Willey and Kathleen Down.   aLondon,bChatto & Windusc1970.   axviii, 542 p. (1 folded), 10 plates (1 folded)bill., mapsc24 cm.  aIncludes bibliographical references.  0aAgricultural systems. 6aSyst?emes agricoles. 7aAgricultura (Aspectos Economicos)2larpcal 0aAgriculture 0aAgricultureaEconomic aspects  c5262d5262