Gangel, Kenneth O. Understanding teaching, by Kenneth O. Gangel. - 3rd - Wheaton, Ill., Evangelical Teacher Training Association [1968] - 95 p. illus. 22 cm. - E.T.T.A. preliminary (foundational) certificate series . Includes bibliographical references. ISBN: 0910566143 LCCN: 68024579 Subjects--Topical Terms: Christian education--Teaching methods. LC Class. No.: BV1534 / .G36 Dewey Class. No.: 268/.6