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2
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Survey research methods / Earl R. Babbie.
- 300.723 B1126
- Babbie, Earl R.,
- Wadsworth Pub. Co.,
- Belmont, Calif. :
-
The practice of social research / Earl Babbie.
- 300.72 B1126 2001
- Babbie, Earl R.,
- Wadsworth Thomson Learning,
- Belmont, CA :