Levenhagen  <br/><br/>
HVAC controls and systems  
/ John I. Levenhagen, Donald H. Spethmann. 
 - New York  McGraw Hill  1993. 
 - xiiii, 334p.  ill.  22cm 
<br/><br/><label>ISBN: </label>0070375097 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air conditioning--Control<br/>Heating--Control
<br/><br/><label>Dewey Class. No.: </label>697 LEV 1993