At: Proceedings of the Biological Society of Washington, 7, 21 By: Knowlton F. H.
journalAt: Palaeobotanist, 1958, 7, 1 By: Bose M. N.
journalAt: Palaeobotanist, 1959, 8, 1–2 By: Sukh-Dev
journalAt: Johns Hopkins University Studies in Geology, 10 By: Berry E. W.
bookAt: Bot. East. Bord., London, John van Voorst By: Tate G.
journalAt: Palaeontologia Indica, Series 2, 1, 2 By: Oldham T., Morris J. E.
journalAt: Palaeontologia Indica, Series 2, 1, 1 By: Oldham T., Morris J. E.
journalAt: Palaeontologia Indica, Series 2, 1, 3 By: Oldham T., Morris J. E.
journalAt: Palaeontologia Indica, Series 2, 1, 4 By: Oldham T., Morris J. E.
journalAt: Palaeontologia Indica, Series 2, 1, 5 By: Oldham T., Morris J. E.