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por Lydon, John W [editor] | Hoy, Trygve [editor] | Slack, John F [editor] | Knapp, Marcia E [editor] | Geological Association of Canada. Mineral Deposits Division | Canada. Geological Survey. Mineral Resources Division.
por Sherlock, Ross L [editor] | Logan, M. Amelia V [editor] | Browne, Rachel [editor] | Geological Association of Canada. Mineral Deposits Division.