Jeffery, Harley M. <br/><br/>
Loop checking :  a technician’s guide  / 
Harley M. Jeffery 
 - Research Triangle Park, NC :  ISA-The Instrumentation, Systems, and Automation Society,  2005 
 - xiv, 141 p. :  ill. ;  26 cm. 
 - ISA technician series .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781556179105 (pbk.) 1556179103 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Process control--Automation