A.J.Watkins and R.K.Parton <br/><br/>
Electrical installation calculations vol.1 

 - 6th ed 
 - A member of the holder headline group, London  1998 
 - viii,134p 
<br/><br/><label>ISBN: </label>0 340 731842 
<br/><br/><label>Dewey Class. No.: </label>621.31924 Wat/Par