| title | ISBN-13 | year of publication |
|---|---|---|
| Coreldraw 12 Yetkili Klavuzu | 978-975-297-533-0 | 1998 |
| Environmental Engineering | 978-0-07-709351-8 | 2000 |
| Environmental Engineering | 978-0-07-116424-5 | 1998 |
| Environmental Engineering | 978-0-07-709127-9 | 1996 |
G. K. · Gerard Kelley · Gerard Kelly · Gérard Koehly · Gerhard Kahl · Gerhard Killy · Gerhard Kowol