Spon's mechanical and electrical services price book 
edited by Davis, Belfield & Everest 
 - 5th ed. 
 - London  E & FN Spon  1973 
 - 331 p. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heating--Costs<br/>Air conditioning--Equipment and supplies--Maintenance and repair