encyclopedia of world history
Subtitle: ancient, medieval, and modern chronologically arranged
By:  compiled and edited by William L. Langer.
Contributors: Gatzke, Hans W. 1915-1987.
Edition: New ed. / revised with the assistance of Hans W. Gatzke.
Publisher: Houghton Mifflin
Published: 1952
Place of publication: Boston, (Mass.)
Language: eng