00433nam a2200121Ia 4500008004100000040001700041082002100058100002000079245006700099260003500166300001400201650009600215190327s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta382bL758E  aLinnemann, Hans 3aAn Economic study of international trade flowscHans Linnemann  aAmsterdambNorth-Hollandc1966  aix, 234p.  aInternational trade-Mathematical models; Economics; United State-Foreign economic relations