At: Monatsberichte der Deutschen Akademie der Wissenschaften zu Berlin, 8, 6-7 By: Reinhardt P.
journalAt: Fitologiya, 2 By: Palamarev E. Kh., Petkova A. S., Uzunova K.
bookAt: Harriman Alaska Exped., New York, Doubleday, Douglas & Company, 4 By: Ulrich E. O.
journalAt: Bulletin of the American Museum of Natural History, 51, 6 By: Cockerell T. D. A.
journalAt: Papers of the Michigan Academy of Science, Arts and Letters, 9 By: Bartlett H. H.
journalAt: Földtani Közlöny, 86, 2 By: Rásky K.
journalAt: Földtani Közlöny, 86, 3 By: Rásky K.
journalAt: Földtani Közlöny, 86, 3 By: Rásky K.
journalAt: Geophytology, 10, 1–2 By: Bande M. B., Prakash U.
bookAt: Fram over polhavet, Kristiania, H. Aschehoug & Co.s Forlag, 2, 33-34 By: Nansen F.