"Revised and brought up-to-date discussions such as: Geology lives in the present and in the past; When the Mediterranean was a desert; Geologic background of Charles Darwin; and Ferdinand Hayden and the geological exploration of the American west. Revised geological time scale …
"Revised and brought up-to-date discussions such as: Geology lives in the present and in the past; When the Mediterranean was a desert; Geologic background of Charles Darwin; and Ferdinand Hayden and the geological exploration of the American west. Revised geological time scale …
"Revised and brought up-to-date discussions such as: Geology lives in the present and in the past; When the Mediterranean was a desert; Geologic background of Charles Darwin; and Ferdinand Hayden and the geological exploration of the American west. Revised geological time scale …