On Jurassic and Cretaceous fossils from north-east Greenland Ravn, J.P.J. (Jesper Peter Johansen), 1866- creator text book Copenhagen Printed by Bianco Luno 1911 1911
print
ENG Cretaceous Greenland Jurassic Paleontology QE733 .R38 Communications paléontologiques (Københavns universitet. Mineralogisk museum), no. 10 https://www.biodiversitylibrary.org/bibliography/29066 10.5962/bhl.title.29066 OTU