00355cam a22001337a 4500008004000000082001200040100001800052245007000070260002500140300001000165650001000175650001600185700002000201180718b1970   xxu||||| |||| 00| 0 eng d  aZ D858f  aDuckham, A.N.  aFarming systems of the worldcby A.N. Duckham and G. B. Masefield  aBombaybAlliedc1970  a542p.  aFarms  aAgriculture  aMasefield, G.B.