District heating combined with electricity generat 

 - London  H M S O U K       1977 
 - 120p.  cm. 
<br/><br/> Its, energy paper.20 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fuel
<br/><br/><label>Dewey Class. No.: </label>X9(F55).3.N7, L7/GD