Geologia historica /

by Dunbar, Carl Owen n. 1891, Dunbar, Carl Owen n. 1891
Published 1961

La Tierra /

by Dunbar, Carl Owen n. 1891, Dunbar, Carl Owen n. 1891
Published 1971

Geología histórica /

by Dunbar, Carl Owen n. 1891, Dunbar, Carl Owen n. 1891
Published 1976

Principios de estratigrafia /

by Dunbar, Carl Owen n. 1891, Dunbar, Carl Owen n. 1891, Rodgers, John
Published 1963

Outlines of historical geology /

by Schuchert, Charles 1858-1942, Schuchert, Charles 1858-1942, Dunbar, Carl Owen n. 1891
Published 1941

Fauna pérmica de el antimonio, oeste de Sonora México /

Published 1965