Introduction to educational research /
Mertler, Craig A.
Introduction to educational research / Craig A. Mertler, C. M. Charles. - 6th ed. - Boston : Pearson, 2008. - xxxiiii, 379 p.
0205510000 :
Education--Research--Methodology.
Introduction to educational research / Craig A. Mertler, C. M. Charles. - 6th ed. - Boston : Pearson, 2008. - xxxiiii, 379 p.
0205510000 :
Education--Research--Methodology.