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| Usa: north atlantic great shearwater (Calonectris diomedea, Procellaria diomedea, Procellaria kuhlii borealis, Puffinus diomedea); cory's shearwater (Calonectris diomedea, Procellaria diomedea, Procellaria kuhlii borealis, Puffinus diomedea) | |||
| ċiefa: 8 phrases in 1 subject |
| Natural resourses and wildlife conservation | 8 |