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journalAt: Bulletin de la Société Géologique de France, Series 6 [1951], 1, 8 By: Morellet J., Ters M.
journalAt: Revue bryologique et lichénologique, 45, 4 By: Plamada E., Givulescu R.
journalAt: Geobios, 19, 2 By: Grambast-Fessard N.
journalAt: Geobios, 4, 3 By: Bernier P.
journalAt: Revista Española de Micropaleontología, 38, 1 By: Georgescu M. D., Braun W. K.
bookAt: Dev. Fl., Cambridge, The University Press By: Arber E. A. N.
journalAt: Palaeontology, 10, 2 By: Mortimer M. G., Chaloner W. G.
journalAt: Review of Palaeobotany and Palynology, 14, 1-2 By: Chaloner W. G.
journalAt: International Journal of Coal Geology, 83, 2-3 By: Cressler W. L., Prestianni C., LePage B. A.