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Survey nonresponse / edited by Robert M. Groves, Don A. Dillman, John Eltinge, Roderick J. A. Little.
- 300.723 S9631n
- John Wiley & Sons, Inc.,
- [2002] ©2002
- New York :
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Sampling techniques / William G. Cochran.
- 519.52 C6631 1963
- Cochran, William G. 1909-1980,
- John Wiley & Sons, Inc.,
- New York :