George H. Gallup The Gallup poll

public opinion, 1972-1977

Engels | 1334 pagina's | Scholarly Resources, Wilmington, Del | 1978

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George Horace Gallup The sophisticated poll watcher's guide

Engels | 232 pagina's | Princeton Opinion Press, [Princeton, N.J.] | 1972

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George Horace Gallup A guide to public opinion polls

Engels | 104 pagina's | Princeton University Press, Princeton | 1944

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George Gallup The pulse of democracy

the public-opinion poll and how it works

Engels | 335 pagina's | Simon and Schuster, New York | 1940

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