The basic rocks of northeastern Maryland and their relation to the granite ...
By: By Arthur Gray Leonard.
Published: 1901
Place of publication: [Minneapolis?
Language: eng
Number of pages: 177
Subjects: Rocks, Igneous.; Petrology -- Maryland.
Notes: Thesis (Ph. D.)--Johns Hopkins university, 1898.
"From the American geologist, vol. XXVIII, Sept., 1901."
"Biographical sketch": p. 177