Healy, David F Modern imperialism : changing styles in historical interpretation / Healy F David. - Washington : Service Center for Teachers of History, 1967. - 29 p. ; 23 cm. - Service Center for Teachers of History ; Publication no.69 . Subjects--Topical Terms: History, Modern--Historiography.Imperialism--history. Dewey Class. No.: P 907.2 H43