Subject ASC0003sec
The geological magazine, or, Monthly journal of geology.
[Decade 1]:v. 7 (1870), Page 312 (1870)
Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
BHL Page 32580693
Keywords
hills rock silurian joyce county hills metamorphic rocs metamorphic hill joyce county meteoric drift slope metamorphic rocks Meteorology Denudation Joyce County Hills Silurian Rock