Fossil freshwater mollusks from Oregon : contained in the Condon Museum of the University of Oregon /

Autor Hanna, G. Dallas, 1887-1970
Vydáno 1922

Fossil mollusks from the John Day Basin in Oregon : contained in the Condon Museum of the University of Oregon /

Autor Hanna, G. Dallas, 1887-1970
Vydáno 1920