College keyboarding/typewriting, complete course / 
Charles H. Duncan ... [et al.]. 
 - 12th ed 
 - Manila :  Mutual Books,  c1990. 
 - 1 v. (various pagings) : ill. 
<br/><br/><label>ISBN: </label>0538-20860-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Typewriting