Educational research : competencies for analysis and application / prepared by L. R. Gay and Peter W. Airasian. - 6th ed. - Upper Saddle River, N. J. : Prentice Hall, c2000. - iii, 160p. ; 26 cm. ISBN: 0130864951 Subjects--Topical Terms: Education--Research LC Class. No.: LB1028 / Ed8 2000