Films.Published in:Public Opinion Quarterly, 1940, v. 4, n. 3, p. 519, doi. 10.1093/poq/4.3.519By:McDonald, JohnPublication type:Article
The rise and fall of the United States film service.Published in:International Journal of Instructional Media, 1994, v. 21, n. 3, p. 239By:Couch, Richard;Hunt, ThomasPublication type:Article