Watkins, A. J.   1925- <br/><br/>
Electrical installation calculations /  [Book]. 
A.J. Watkins. Vol.1.  
 - 6th ed. /   prepared by R.K. Parton. 
 - London :   Edward Arnold,   1998. 
 - viii, 134 p. :   ill. ;   22 cm. 
<br/><br/> Previous ed.: 1992. 
<br/><br/><label>ISBN: </label>0340731842 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric wiring--Mathematics.