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Asking questions : the definitive guide to questionnaire design, for market research, political polls, and social and health questionnaires
Bradburn, Norman; Sudman, Seymour; Wansink, Brian - 2004 - Rev. ed.
Persistent link: https://www.econbiz.de/10004447198
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Asking questions : [a practical guide to questionnaire design]
Sudman, Seymour; Bradburn, Norman - 1982 - 1. ed.
Persistent link: https://www.econbiz.de/10004708175