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23
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Survey errors and survey costs / Robert M. Groves.
- 001.433 G8841
- Groves, Robert M.,
- Wiley,
- [1989] ©1989
- New York :
-
Probability and statistics; models for research / Daniel E. Bailey.
- 519 B1541
- Bailey, Daniel Edgar,
- Wiley,
- [1971] ©1971
- New York :
-
Mail and telephone surveys : the total design method / Don A. Dillman.
- 300.723 D5789
- Dillman, Don A., 1941-
- Wiley,
- New York :