Notes on the Geology of Onondaga County, N.Y.

Embracing a Short Description of the Various Eras, Periods and Groups, Together With Statements as to Their (1) Outcrop, (2) Thickness, (3) Economic Importance,... » 

Embracing a Short Description of the Various Eras, Periods and Groups, Together With Statements as to Their (1) Outcrop, (2) Thickness, (3) Economic Importance, (4) Fossils, (5) Favorable Localities for Stud «