Emerson, Sandra L. <br/><br/>
Troff typesetting for UNIX systems. 

 - Sydney :  Prentice Hall,  1987. 
 - 244 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>9780139309595 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computerized typesetting.<br/>UNIX (Computer file)<br/>Troff (Computer program)