Cystoids from the Trenton rocks of Michigan /

Autor Hussey, Russell C. 1888-
Vydáno 1928

Contributions to the geology of Foxe Land, Baffin Island /

Autor Gould, Laurence McKinley, 1896-1995, Foerste, Aug. F. 1862-1936, Hussey, Russell C. 1888-
Vydáno 1928