Gupton, Guy W. Jr. <br/><br/>
HVAC controls: operation & maintenance  [electronic resource] 
Guy W. Gupton, Jr. 
 - 3rd edition. 
 - Lilburn, GA :  Fairmont Press,  2002 
<br/><br/><label>ISBN: </label>0-203-91163-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air conditioning -- Control.<br/>Heating -- Control.<br/>Ventilation -- Control.