Knapp, Brian J. Challenge of the economic environment / B. J. Knapp, S. R. J. Ross and D. L. R. McCrae - Harlow : Longman, 1989 [impression 1992] - 271 p. : ill., ; 24 cm - Longman advanced geography . Includes index ISBN: 0582016363 Subjects--Topical Terms: Economic geography Dewey Class. No.: 330.9 / KNC 1992