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2
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Practical research : planning and design.
- 001.4 L484 2005
- Leedy, Paul D.
- Prentice Hall,
- c2005.
- Upper Saddle River, N.J. :
-
Practical research : planning and design / Paul D. Leedy.
- 001.4
- Leedy, Paul D.
- Macmillan ; Maxwell Macmillan Canada ; Maxwell Macmillan International,
- c1993.
- New York : Toronto : New York :