=LDR 22 4500 =001 548 =082 04$a630.9 POS =100 1\$aPostan, M. M. =245 10$aThe Cambridge Economic History of Europe: vol 1 the agrarian life of the Middle Ages =260 \\$aLondon :$bCambridge University Press,$c1966 =650 \0$aBooks =852 \\$bFreeman Library$h630.9 POS