Opinion Research Corporation was created in 1938.
Dynamics Research Corporation was created in 1955.
Rectilinear Research Corporation was created in 1966.
Interval Research Corporation was created in 1992.
National Research Development Corporation was created in 1948.
Georgia Tech Research Corporation was created in 1937.
Public Opinion Research was created in 1976.
American Association for Public Opinion Research was created in 1947.
Roper Center for Public Opinion Research was created in 1947.
World Association for Public Opinion Research was created in 1947.
Dynamics Research Corporation's population is 2,005.
The population of Dynamics Research Corporation is 1,905.
The population of Interval Research Corporation is 2,010.