Björn Helander · Bjørn Høyland · Bjorn Hoyland
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Havsornen i Sverige | 978-91-558-5052-4 (91-558-5052-9) | 1975 |
| Reproduction of the white-tailed sea eagle Haliaeetus albicilla in Sweden, in relation to food and residue levels of organochlorine and mercury compounds in the eggs | 978-91-7146-245-9 (91-7146-245-7) | 1983 |