Geologic time
Subtitle: as indicated by the sedimentary rocks of North America. Address ...
Publisher: Salem Press
Published: 1894
Place of publication: Salem, Mass
Language: eng
Number of pages: 169
Notes: "From the Proceedings of the American Association for the Advancement of Science, vol. XLII, 1893."

Map: also Journ. Geology I. 1893. 639-676.