00741nam a2200205Ia 4500001001100000005001700011008004100028020001500069020001800084050002000102245011500122260003700237300007100274504004200345650002600387650002500413650004700438653001600485653003400501000001276020251012174523.0  730905s1970    enkabf   b    000 0 eng  a0701113618  a978070111361200aS439b.D97 197010aFarming 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