G. W. · Gwen Watkins · Gwyn Watkin
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Electrical Contracting Forms and Procedures Manual | 978-0-07-032699-6 (0-07-032699-1) | 1995 | Ralph Edgar Johnson |
| Handbook of Electrical Construction Tools and Materials | 978-0-07-069920-5 (0-07-069920-8) | 1996 | |
| Successful Business Operations for Electrical Contractors | 978-0-07-032655-2 (0-07-032655-X) | 1993 | Ralph Edgar Johnson |