zondag 26 mei 2013
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Direct naar
- Panelbook
- Brochure
- Presentatie
Interesting (long) read - Sampling and Data Quality Issues in Internet Surveys: http://t.co/f27uqyxrQL #mrx #pi
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Interesting (long) read - Sampling and Data Quality Issues in Internet Surveys: http://t.co/f27uqyxrQL #mrx #pi