World Association for Public Opinion Research was created in 1947.
American Association for Public Opinion Research was created in 1947.
Public Opinion Research was created in 1976.
Roper Center for Public Opinion Research was created in 1947.
Public Services Association was created in 1967.
American Public Power Association was created in 1940.
Bermuda Public Services Association was created in 1952.
Indian Public Health Association was created in 1956.
Public Transport Users Association was created in 1976.
Public Service Association of NSW was created in 1899.
American Public Transportation Association was created in 1882.
American Public Health Association was created in 1872.
Public Opinion Quarterly was created in 1937.