International trade; theory and empirical evidence [by] H. Robert Heller. - 2d ed. - Englewood Cliffs, N.J., Prentice-Hall [1973] - xiv, 236 p illus 24 cm. Includes bibliographies. ISBN: 0134739183 9780134739182 Subjects--Topical Terms: International trade.Commerce international. LC Class. No.: HF1411 / .H38 1973