Letherman, K. M. <br/><br/>
Automatic controls for heating and air conditioning :  principles and application / 
K.M. Letherman 
 - Oxford :  Pergamon Press,  1981 
 - 235p. :  ill.;  26cm. 
 - International series on heating, ventilation and refrigeration,  v.15 .
<br/><br/><label>ISBN: </label>0080232221 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heating--Control<br/>Air conditioning--Control