Philippine electrical code.

Principles of electrical engineering materials and devices por Kasap, S.O. (Safa O.)

Journeyman's guide to the National Electrical Code por Gotshaw, F. Marco

National electrical code 1999.

1,543 pass electrical engineer exams

2,439 pass electrical engineers examination

Electromagnetic mixing formulas and applications por Sihvola, A. H.

Available for University of the Philippines Diliman via IET Digital Library. Click here to access
Also available remotely for University of the Philippines Diliman via IET Digital Library. Click here to access thru EZproxy

Guide to the National Electrical Code por Harman, Thomas L. 1942-

McGraw-Hill's national electrical code handbook

2,439 out of 5,219 pass electrical eng'g examinations