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Are you Frederic P Hartwell, author of the books below?
Wiring Simplified by Frederic P Hartwell McGraw-Hill's National Electrical Code 2020 Handbook, 30th Ed... by Frederic P Hartwell American Electricians' Handbook, Seventeenth Edition by Frederic P Hartwell Wiring Simplified - 47th Edition by Frederic P Hartwell


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