Note 62 — III A CENTURY OF GEOLOGY.—STEPS OF PROGRESS IN THE INTERPRETATION OF LAND FORMS
Reading edition
Gilbert, G. K., On certain glacial and post-glacial phenomena of the Maumee valley, this Journal, 1, 339–345, 1871.
Reading edition
Gilbert, G. K., On certain glacial and post-glacial phenomena of the Maumee valley, this Journal, 1, 339–345, 1871.