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Cover of Data Collection by wendy olsen

Data Collection

By Wendy Olsen

Cover of Internet research methods by claire hewson,peter yule,dianna laurent,carl vogel

Internet research methods

By Claire Hewson,Peter Yule,Dianna Laurent,Carl Vogel

Cover of Survey Research Designs by r. w. pearson

Survey Research Designs

By R. W. Pearson

Cover of Fragwürdige Fragebögen by florian heinrich

Fragwürdige Fragebögen

By Florian Heinrich

Cover of Statistical survey techniques by raymond james jessen

Statistical survey techniques

By Raymond James Jessen