Helma, Lawson E.T. <br/><br/>
Electric light and power installations/ 
E.T. Lawson Helma 
 - London:  Cassell,  1954 
 - 173 p.;  19 cm. 
 - Electric light and power installations .
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric lighting--Installation<br/>Electric lighting--Wiring<br/>Electric wiring
<br/><br/><label>Dewey Class. No.: </label>621.32