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![Cover for Roger Sapsford · Survey Research (Paperback Book) [2 Revised edition] (2006)](https://imusic.b-cdn.net/images/item/original/327/9781412912327.jpg?roger-sapsford-2006-survey-research-paperback-book&class=scaled&v=1604575159)
![Cover for Roger Sapsford · Data Collection and Analysis - Published in Association with The Open University (Paperback Book) [2 Revised edition] (2006)](https://imusic.b-cdn.net/images/item/original/631/9780761943631.jpg?roger-sapsford-2006-data-collection-and-analysis-published-in-association-with-the-open-university-paperback-book&class=scaled&v=1402662124)