Contributions to the Geological History of the Hepaticae. II. On a Fossil Member of the Marchantiineae from the Mesozoic Plant-bearing Deposits near Lago San Martin, Patagonia (Lower Cretaceous).
Övrigt tryckt och skrivet. Lund. 1955.
Gott skick. (18) s. + 3 pl. Extrakt ur BN. [BN10]