AIPO 589, September 17, 1957. [machine-readable data file] / American Institute of Public Opinion (AIPO) [principal investigator]. Storrs, CT: Roper Center for Public Opinion Research. [distributor].
Study Number: YA-001-029-1-2-United States-ROPER-1957
AIPO 625, March 2-7, 1960. [machine-readable data file] / American Institute of Public Opinion (AIPO) [principal investigator]. Storrs, CT: Roper Center for Public Opinion Research. [distributor].
Study Number: YA-001-030-1-2-United States-ROPER-1960
AIPO 650, September 19, 1961. [machine-readable data file] / American Institute of Public Opinion (AIPO) [principal investigator]. Storrs, CT: Roper Center for Public Opinion Research. [distributor].
Study Number: YA-001-032-1-2-United States-ROPER-1961
AIPO 704, January 5, 1965. [machine-readable data file] / American Institute of Public Opinion (AIPO) [principal investigator]. Storrs, CT: Roper Center for Public Opinion Research. [distributor].
Study Number: YA-001-038-1-2-United States-ROPER-1965
AIPO 719, October 27, 1965. [machine-readable data file] / American Institute of Public Opinion (AIPO) [principal investigator]. Storrs, CT: Roper Center for Public Opinion Research. [distributor].
Study Number: YA-001-042-1-2-United States-ROPER-1965
AIPO 766, August 7-12, 1968. [machine-readable data file] / American Institute of Public Opinion (AIPO) [principal investigator]. Storrs, CT: Roper Center for Public Opinion Research. [distributor].
Study Number: YA-001-061-1-1-United States-ROPER-1968
AIPO 769, September 26-October 1, 1968. [machine-readable data file] / American Institute of Public Opinion (AIPO) [principal investigator]. Storrs, CT: Roper Center for Public Opinion Research. [distributor].
Study Number: YA-001-063-1-1-United States-ROPER-1968
AIPO 770, October 17-22, 1968. [machine-readable data file] / American Institute of Public Opinion (AIPO) [principal investigator]. Storrs, CT: Roper Center for Public Opinion Research. [distributor].
Study Number: YA-001-064-1-1-United States-ROPER-1968
AIPO 786, August 12, 1969. [machine-readable data file] / American Institute of Public Opinion (AIPO) [principal investigator]. Storrs, CT: Roper Center for Public Opinion Research. [distributor].
Study Number: YA-001-052-1-2-United States-ROPER-1969
Wisconsin statewide survey IX, June 1969 (WSRL 364). [machine-readable data file] / University of Wisconsin-Extension. Wisconsin Survey Research Laboratory [principal investigator]. Madison, WI: University of Wisconsin. Data and Program Library Service. [distributor].
Study Number: YA-008-002-1-1-United States-DPLS-1969
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