Gladstone,John <br/><br/>
Air conditioning testing/adjusting/balancing; afield practice manual 

 - 2 
 - New york  Strand reinhold company  1981 
 - 196 
<br/><br/> received from ERC TNP 
<br/><br/><label>ISBN: </label>0-442-27714-0 
<br/><br/><label>Universal Decimal Class. No.: </label>621.56  / GLA.81