=LDR  00000nam a2200000ui 4500
=001  105
=008  250530s1974\\\\xx\|||||||||||||||||eng\d
=082  04$a630 .9
=100  1\$aGrigg, David
=245  10$aThe agricultural systems of the world
=260  \\$aLondon :$bCambridge University Press,$c1974
=852  \\$bFreeman Library$cBooks$h630 .9