Cohen, Louis, 1928- Research methods in education [[Book] /] Louis Cohen, Lawrence Manion, and Keith Morrison. - 6th ed. - London ; New York : Routledge, 2007. - 638 p : ill ; 24cm. Includes bibliographical references and index. Includes bibliographical references and index. All age. ISBN: 9780415368780 0415368782 (pbk.) LCCN: 2006017358 Subjects--Topical Terms: Education--Research.Education--Research.--Great Britain. Dewey Class. No.: 370.7 National Library of Medicine Call No.: 370.7 / C R