American intervention: 1917 and 1941.
Series: Service Center for Teachers of History. Publication -- no. 30; Publication (Service Center for Teachers of History) -- no. 30.
Publisher: Service Center for Teachers of History
Published: 1960
Place of publication: Washington
Language: eng
Number of pages: 19
Subjects: World War, 1914-1918 -- United States; World War, 1939-1945 -- United States