| نقل قول | Oakley, K.L., 1981 Determinants of Population Size of Pigeon Guillemots Cepphus columba on Naked Island, Prince William Sound, Alaska. MSc Thesis, University of Alaska, Fairbanks. |
| مرجع | 80133 Oakley, K.L., 1981 |
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| Named Used as Valid | Cepphus columba |
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