| |
Johnson, John Granville. Middle Devonian brachiopods from the Bird Fiord Formation of Bathurst Island, Arctic Canada. J.G.Johnson and D.G.Perry. In Canadian Journal of Earth sciences, 1976, Volume 13, Number 5. Ottawa, 1976, Canadian Journal of Earth sciences, 1976, Volume 13, Number 5.S.615-635, : .
| | |
|