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Professional supplement for educational research : competencies for analysis and application, third edition / L.R. Gay.
- 370.72 G2851 1987
- Gay, L. R.
- Merrill Pub. Co.,
- c1987.
- Columbus :
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Educational evaluation & measurement : competencies for analysis and application / L.R. Gay.
- 371.26 G2851
- Gay, L. R.
- Charles E. Merrill Publishing Company,
- c1980.
- Columbus :