A. P. THORNTON. Imperalism in the Twentieth Century. Pp. xii,363. Minneapolis: University of Minnesota Press,1978. $20.00. GEORGE LISKA. Career of Empire: American and Imperial Expansion over Land and Sea. Pp. xi,360. Baltimore,MD: Johns Hopkins University Press,1978. $17.95

A. P. THORNTON. Imperalism in the Twentieth Century. Pp. xii,363. Minneapolis: University of Minnesota Press,1978. $20.00. GEORGE LISKA. Career of Empire: American and Imperial Expansion over Land and Sea. Pp. xi,360. Baltimore,MD: Johns Hopkins University Press,1978. $17.95