00383nam a22001457i 4500001001000000005001700010008004100027082001800068100001900086245003200105260005100137300001700188650001400205020001800219SXC01326220260819093538.0260101s1971    ii            000 0 eng d  a330 PER-E222  aPerrow, John A10aEconomics /cPerrow, John A  abUniversity Tutorial Press Co., London,c1971  ap. ;c22 cm. 0aEconomics  a9780675006347