The British gas directory of energy-saving equipment / 
compiled by Cambridge Information & Research Services 
 - 2nd ed. 
 - London :  Cambridge Information & Research Services,  1983 
 - 200 p. ;  21 cm. 
<br/><br/><label>ISBN: </label>0905332156 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Energy conservation--Directories<br/>Industry--Energy conservation--Directories<br/>Energy conservation equipment industry--United Kingdom--Directories