Gall, Meredith D., 1942- Educational research : an introduction / Meridith D. Gall, Jo yce V. Gall, Walter R. Borg - 7th ed. - Boston: Allyn and Bacon, 2003. - xxxi , 656 p: ill ; 24 cm includes bibliographical references and index ISBN: 0321081897 Subjects--Topical Terms: Education--ResearchEducation--United States--Research Dewey Class. No.: 370.72 GAL