At: Bulletin of the Torrey Botanical Club, 33, 5 By: Cockerell T. D. A.
journalAt: Meddelelser om Grønland, 93, 5 By: Seward A. C., Conway V. M.
journalAt: Rozpravy Československé Akademie věd, Řada, Řada matematických a přírodních věd, 71, 1 By: Němejc F.
bookAt: Harriman Alaska Exped., New York, Doubleday, Douglas & Company, 4 By: Knowlton F. H.
journalAt: Proceedings of the Indian Science Congress, 25, 3 By: Jacob K.
journalAt: Palaeontologia Sinica, Series, A, Fossil plants of China [Jiazhong], 1, 2 By: Halle T. G.
journalAt: Annals of the Carnegie Museum, 24 By: Brooks B. W.
journalAt: Proceedings of the United States National Museum, 82, 2953, Art. 12 By: Berry E. W.
journalAt: Memoirs of the Carnegie Museum, 8, 2 By: Jennings O. E.
journalAt: Quarterly Journal of the Geological Society of London, 88, 351 By: Seward A. C.