00712nam a2200217Ia 4500 0000006371 20251012174451.0 711014s1971 ne a bs 001 0 eng 0720431700 eng dut n-us--- HC79.I5 O5 382/.1/04 International trade theory and regional income differences; United States 1880-1950, by Erling Olsen. Amsterdam, North-Holland Pub. Co. 1971. xv, 221 p. with illus 23 cm. Summary in Dutch. Income Mathematical models. Income United States Mathematical models. International trade Mathematical models. 4123 4123 0 0 0 0 KEM KEM 2012-12-07 0 0000003713 2025-10-12 08:34:47 2025-10-12 OS