=LDR 22 4500 =001 3452 =082 04$a940 PAR =100 1\$aParker, Geoffrey =245 10$aThe logic of unity: an economic geography of the common market =260 \\$aHarlow :$bLongmans,$c1968 =650 \0$aBooks =852 \\$bFreeman Library$h940 PAR