| Authors(s) | Leopold M.F., Wolf P.A. and Hüppop O. |
| Year | 1992 |
| Title | Food of young and colony-attendance of adult guillemots Uria aalge on Helgoland. Helg. Meeresunters. 46: 237-249 |
| Authors(s) | Leopold M.F., Wolf P.A. and Hüppop O. |
| Year | 1992 |
| Title | Food of young and colony-attendance of adult guillemots Uria aalge on Helgoland. Helg. Meeresunters. 46: 237-249 |