Society for Technical Communication   <br/><br/>
Typing guide for mathematical expressions  (Book) 

 - Washington  Society for Technical Communication  1976 
 - 37 p.  27 cm. 
<br/><br/><label>ISBN: </label>0914548220 
<br/><br/><label>Universal Decimal Class. No.: </label>82.08:51 STC  / 4660