Outlines of Geologic History, with Especial Reference to North America; a Series of Essays Involving a Discussion of Geologic Correlation Presented Before Section e of the American Association for the Advancement of Science in Baltimore, December 1908
Outlines of Geologic History, with Especial Reference to North America; a Series of Essays Involving a Discussion of Geologic Correlation Presented Before Section e of the American Association for the Advancement of Science in Baltimore, December 1908