| Referens | Ozawa, K. 1970 Observations of birds in the East China Sea, April 1968, "Umitaka Maru". Miscellaneous reports of Yamashina Institute of Ornithology 6(1-2):195-205. |
| DOI / ISBN | |
| Artikelns URL | |
| Ref. No. | 6785 |
| Språk | English |
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