Terrainal differentiation of the Paleozoic succession /
Keyes, Charles Rollin, 1864-1942.
Terrainal differentiation of the Paleozoic succession / by Charles Keyes. - Des Moines : R. Henderson, state printer, 1915. - [2 p.] : 1 fold. chart ; 25 cm.
gs 15000417
Geology--Iowa.
Geology, Stratigraphic.
QE654 / .K49
Terrainal differentiation of the Paleozoic succession / by Charles Keyes. - Des Moines : R. Henderson, state printer, 1915. - [2 p.] : 1 fold. chart ; 25 cm.
gs 15000417
Geology--Iowa.
Geology, Stratigraphic.
QE654 / .K49