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Practical research : planning and design / Paul D. Leedy ; with contributions by Timothy J. Newby and Peggy A. Ertmer.
- 001.42 L484 1997
- Leedy, Paul D.,
- Merrill,
- Upper Saddle River, N.J. :
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Applied statistics and the SAS programming language / Ronald P. Cody, Jeffrey K. Smith.
- 519.50285536 C671 1997
- Cody, Ronald P.,
- Prentice Hall,
- Upper Saddle River, N.J. :