| Citation | Wilkens, S. and K.-M. Exo 1998 Population size and density dependant effects on breeding success in Herring gulls (Larus argentatus) on Mellum Island. Journal for Ornithology 139:21-36. |
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| Paper URL | |
| Ref. No. | 101503 |
| Language | English |
| Usage | not seen |
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