Fundamentals of electricity : Basic text-lab.manual 
Velasco, Benjamin S. 
 -  National Book Store, Inc.  1992 
 - xiv, 337 pages. 
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<br/><br/><label>ISBN: </label>9-71085216-7 
<br/><br/><label>Dewey Class. No.: </label>F 621.32 V54f 1992