| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Philippine vacations & explorations | 978-971-91082-3-8 (971-91082-3-1) | 1988 | |
| Philippine Vacations & Explorations | 978-971-91712-1-8 (971-91712-1-9) | 1977 | Rebecca de Villa |
G D · G. V. · G. Villa · J.D. · J. G. · J. Gale · J.V.