Thornton, A. P. Imperialism in the twentieth century / by A. P. Thornton. - Minneapolis : University of Minnesota Press, c1978 - xii, 363 p. ; 23 cm. Includes index. Bibliography: p. [329]-343. ISBN: 0816608202 LCCN: 77081211 Subjects--Topical Terms: Imperialism. Dewey Class. No.: 321.030904 / THI 1978