Vydania od Roger Sapsford

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Cover for Roger Sapsford · Survey Research (Paperback Book) [2 Revised edition] (2006)

2 Revised edition

Survey Research (2006)

Cover for Roger Sapsford · Data Collection and Analysis - Published in Association with The Open University (Paperback Book) [2 Revised edition] (2006)

2 Revised edition

Data Collection and Analysis - P... (2006)