Umbach, Clayton A. How to prepare for management responsibilities / Clayton A. Umbach - Houston, Tex., Gulf Pub. Co. [c1961] - 274 p. illus. 22 cm. LCCN: 61018469 Subjects--Topical Terms: Management. LC Class. No.: HD31 / .U5 Dewey Class. No.: 658.3 / UMH 1961