Davis belfield and ejerest <br/><br/>
Spon's mechanical and electrical services price book. 9th edition 

 -  E & F.N spon london  1978 
 - 372 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering
<br/><br/><label>Dewey Class. No.: </label>620.0294  / DAV