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Fundamentals of social work research / Rafael J. Engel, Russell K. Schutt.
- 361.3072 E571 2014
- Engel, Rafael J.
- SAGE,
- c2014.
- Los Angeles, Calif. :
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The SAGE handbook of public opinion research / edited by Wolfgang Donsbach and Michael W. Traugott.
- 303.38 S1293
- Sage Publications,
- 2008.
- Los Angeles, Calif. :