https://catalogue-scientifique.canada.ca/record=1336412~S6*frc
Rechercher Whittaker, A; Rechercher Holliday, D. W; Rechercher Penn, Ian Edwin; Rechercher Whittaker, Alfred; Rechercher Holliday, Douglas Watson
Published for the Geological Society by Blackwell Scientific, 1985, ISBN : 0632014881
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