At: Journal of the Indian Botanical Society, 26 By: Saksena S. D.
journalAt: Papers of the Michigan Academy of Science, Arts and Letters, 17 By: Arnold C. A.
journalAt: Johns Hopkins University Studies in Geology, 13 By: Berry E. W.
journalAt: Professional Papers / United States Geological Survey, 131, G By: Knowlton F. H.
journalAt: Annals of the Natal Museum, 22, 2 By: Lacey W. S., van Dijk D. E., Gordon-Gray K. D.
bookAt: Sci. Res. Norw. N. Polar Exp. 1893-1896, Christiania, Jacob Dybwad, 1, Art. 3 By: Nathorst A. G.
journalAt: Memoirs of the Geological Survey of Great Britain, Series, Palaeontology, 4, 1 By: Crookall R.
journalAt: Memoirs of the Geological Survey of Great Britain, Series, Palaeontology, 4, 2 By: Crookall R.
journalAt: Memoirs of the Geological Survey of Great Britain, Series, Palaeontology, 4, 3 By: Crookall R.
journalAt: Memoirs of the Geological Survey of Great Britain, Series, Palaeontology, 4, 4 By: Crookall R.