Laboratory manual in polygraphy 
Chavez, Carmelita. 
 -  Wiseman's Books Trading, Inc.  2016 
 - 39 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>978-9-71961778-5 
<br/><br/><label>Dewey Class. No.: </label>F 363.25 C3985 2016