Educational research :
Gay, L. R.
Educational research : competencies for analysis and applications / L.R. Gay, Geoffrey E. Mills, Peter W. Airasian. - 9th ed. - Upper Saddle River, N.J. : Merrill/Pearson, c2009. - xvi, 618 p. : ill. ; 27 cm.
Includes bibliographical references and index.
9780132338776 0132338777
2008001686
Education--Research.
LB1028 / .G37 2009
370.7/2
Educational research : competencies for analysis and applications / L.R. Gay, Geoffrey E. Mills, Peter W. Airasian. - 9th ed. - Upper Saddle River, N.J. : Merrill/Pearson, c2009. - xvi, 618 p. : ill. ; 27 cm.
Includes bibliographical references and index.
9780132338776 0132338777
2008001686
Education--Research.
LB1028 / .G37 2009
370.7/2