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2
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Focus groups : a practical guide for applied research / Richard A. Krueger ; foreword by Michael Quinn Patton.
- 361.61068 K941 1988
- Krueger, Richard A.,
- Sage Publications,
- [1988?] ©1988
- Newbury Park, California :
-
Focus groups : a practical guide for applied research / Richard A. Krueger.
- 361.61068 K941 1994
- Krueger, Richard A.,
- Sage Publications,
- Thousand Oaks, California :