Van Dalen, Deobold B., 1911- Understanding educational research : an introduction / [by] Deobold B. Van Dalen. With two chapters by William J. Meyer. - 432 pages : illustrations ; 24 cm. - McGraw-Hill series in education. Psychology and human development in education . LCCN: 61013172 Subjects--Topical Terms: Educational research. LC Class. No.: LB1028 / .V3