Becker, C. L. 1. (1945). History of modern Europe: Course three : Imperialism and world conflict. A self-teaching course, based on Modern history. [N.p.]: Pub. for the United States armed forces by Silver Burdett Co..

Becker, Carl Lotus 1873-1945. History of Modern Europe: Course Three : Imperialism and World Conflict. A Self-teaching Course, Based On Modern History. [N.p.]: Pub. for the United States armed forces by Silver Burdett Co., 1945.

Becker, Carl Lotus 1873-1945. History of Modern Europe: Course Three : Imperialism and World Conflict. A Self-teaching Course, Based On Modern History. [N.p.]: Pub. for the United States armed forces by Silver Burdett Co., 1945.