Effects of Questionnaire Length, Respondent-Friendly Design, and a Difficult Question on Response Rates for Occupant-Addressed Census Mail Surveys
| Autor: | Dillman, Don A., Sinclair, Michael D., Clark, Jon R. |
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| Zdroj: | The Public Opinion Quarterly, 1993 Oct 01. 57(3), 289-304. |
| Databáze: | JSTOR Journals |
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