Gray, H. Peter International travel--international trade by H. Peter Gray. - Lexington Heath Lexington Books [1970] - xiii, 264 p. - Studies in business, industry and technology . 920724 Includes bibliographical references. LCCN: 70133222 Subjects--Topical Terms: Tourist tradeBalance of payments LC Class. No.: G155.A1 / G7 Dewey Class. No.: 338.4/7/91