"E. K." · Eric Kraven · Erkki Karvonen
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Boreal Owl: Ecology, Behaviour And Conservation Of A Forest-Dwelling Predator | 978-1-107-42532-3 (1-107-42532-8) | 2014 | |
| The Boreal Owl: Ecology, Behaviour and Conservation of a Forest-Dwelling Predator | 978-0-521-11371-7 (0-521-11371-7) | 2012 | Harri Hakkarainen |