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