D B · G.B. · G D · G. Dennis Beecroft
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Southern Region Two-character Headcodes | 978-0-906988-18-3 (0-906988-18-7) | 1986 | Bryan W. Rayner |
| Southern Region Two-character Headcodes | 978-0-906988-02-2 (0-906988-02-0) | 1981 | " |