Emerson, Sandra L. <br/><br/>
Troff typesetting for UNIX systems/ 
Sandra L. Emerson and Karen Paulsell. 
 - Englewood Cliffs, N.J.:  Prentice-Hall,  1987. 
 - 359 p. :  ill. ;  24 cm. 
<br/><br/> Includes indexes. 
<br/><br/><label>ISBN: </label>0139309594 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computerized typesetting.<br/>UNIX (Computer operating system)<br/>Troff (Computer program)