Subject ASC0003spn

The geological magazine, or, Monthly journal of geology.
Decade 2:v.4 (1877) [Incomplete], Page 506 (1877)
Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
BHL Page 32579443

Keywords

geology crystals spherulitic felsite felsite sketch microscopic rock radial structure mineral spherulitic felsite mircoscope

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