Subject ASC0003scy

The geological magazine, or, Monthly journal of geology.
[Decade 1]:v. 6 (1869), Page 576 (1869)
Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
BHL Page 32513093

Keywords

geology cambrian cambrian slate variegation oxides peculiar form slate quarter size penrhyn llanberis quarry banding rock ohyrhina tooth variegation cambrian slate

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