ID:DA00591723
International Association of Public Opinion Institutes
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Gallup International
U.S. Dept. of Commerce, National Technical Information Service [1986]
Italy , The Netherlands
Available at 1 libraries
edited by Gordon Heald and Robert J. Wybrow
Croom Helm c1986
Available at 17 libraries
edited by Norman L. Webb and Robert J. Wybrow
Sphere Books 1981
pbk.
Available at 5 libraries
Gallup International 1963