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Educational research : competencies for analysis and applications / L.R. Gay, Peter Airasian.
- 370.72 G2851 2003
- Gay, L. R.
- Merrill/Prentice Hall,
- c2003.
- Upper Saddle River, N.J. :
-
Educational research : competencies for analysis and applications / L.R. Gay, Geoffrey E. Mills, Peter Airasian.
- 370.72 G2851 2006
- Gay, L. R.
- Pearson Merrill Prentice Hall,
- c2006.
- Upper Saddle River, N.J. :