Authors: Frederic P. Hartwell

  • McGraw Hill’s National Electrical Code 2023 Handbook, 31st Edition — Frederic P. Hartwell

    McGraw Hill’s National Electrical Code 2023 Handbook, 31st Edition — Frederic P. Hartwell

  • American Electricians’ Handbook, Seventeenth Edition — Frederic P. Hartwell

    American Electricians’ Handbook, Seventeenth Edition — Frederic P. Hartwell