HVAC and refrigeration systems 
3G E-learning. 
 - Second edition. 
 -  3G E-learning LLC.  2019 
 - xi, 289pages 
<br/><br/>
<br/><br/><label>ISBN: </label>978-1-984634-52-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Refrigeration and refrigerating machinery.
<br/><br/><label>Dewey Class. No.: </label>621.56 H989 2019