Gay, L.R.
Educational research : competence for analysis and application / L. R. Gay. - 5th ed. - Upper Saddle River, N.J. : Prentice Hall, 1996. - xxiv, 662 p.
0023408146
Education--Research.
370.78 GA ED
Educational research : competence for analysis and application / L. R. Gay. - 5th ed. - Upper Saddle River, N.J. : Prentice Hall, 1996. - xxiv, 662 p.
0023408146
Education--Research.
370.78 GA ED