Key points are not available for this paper at this time.
Proceedings of the Thirteenth Conference on Public Opinion Research JOHN W. RILEY, JR., JOHN W. RILEY, JR. Editor Search for other works by this author on: Oxford Academic Google Scholar FREDERICK F. STEPHAN FREDERICK F. STEPHAN President AAPOR Search for other works by this author on: Oxford Academic Google Scholar Public Opinion Quarterly, Volume 22, Issue 2, SUMMER 1958, Page 169, https://doi.org/10.1086/266784 Published: 01 January 1958
John W. Riley (Wed,) studied this question.