Leffingwell, William H. <br/><br/>
Textbook of office management / 
William H. Leffingwell; Edwin M. Robinson 
 - 3rd ed.  
 - New York :  Macgraw-Hill Book Company,   c1950. 
 - xiv, 649 p. :  ill. ;  23 cm.  
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Office management.
<br/><br/><label>Dewey Class. No.: </label>651.3  / LET 1950