Couper, A.D. The geography of sea transport / by A.D. Couper. - London : Hutchinson, 1972. - 208 p. : ill., maps ; 23 cm. Includes bibliographical references. ISBN: 0091128501; 009112851X (pbk) Subjects--Topical Terms: Shipping.--------Geography, Commerical.-------- Dewey Class. No.: 387