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Foundations of program evaluation : theories of practice / William R. Shadish, Jr., Thomas D. Cook, Laura C. Leviton.
- 361.60684 S5248
- Shadish, William R.,
- Sage Publications,
- [1991] ©1991
- Newbury Park, Calif. :
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Modern methods of data analysis / edited by John Fox, J. Scott Long.
- 519.5 M6894
- Sage Publications,
- [1990] ©1990
- Newbury Park, Calif. :