Leffingwell, William Henry, 1876-1934. Textbook of office management, Textbook of office management by William H. Leffingwell and Edwin M. Robinson. - 3d ed. - New York, McGraw-Hill, 1950 - xiv, 649 p. illus., forms. 24 cm. Include Indexses LCCN: 50007324 Subjects--Topical Terms: Office management. LC Class. No.: HF5547 / .L45 1950 Dewey Class. No.: 651.3 / LET 1950