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"Online-Research - Markt- und Sozialforschung mit dem Internet."
Martin Welker, Andreas Werner, Joachim Scholz (2005)
- Martin Welker, Andreas Werner, Joachim Scholz:
Online-Research - Markt- und Sozialforschung mit dem Internet. dpunkt.verlag 2005, ISBN 978-3-89864-308-5, pp. I-XVII, 1-299
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