00285cam a22000977a 4500008004000000082001600040245006000056260004700116300001000163700001400173180718b1969   xxu||||| |||| 00| 0 eng d  aT19x43 G317  aEconomic activity and foreign tradecedited by H. Arntz  aEssenbThe Press and the Informationc1969  a114p.  aArntz, H.