At: Memoirs and Proceedings of the Manchester Literary and Philosophical Society, 80 By: Johnson T.
journalAt: Bulletin of the Torrey Botanical Club, 77, 6 By: Mamay S. H., Andrews H. N.
journalAt: American Journal of Botany, 56, 5 By: Jain R. K., Hall J. W.
journalAt: Northwest science, 6, 2 By: Ashlee T. R.
journalAt: Bulletin of the Agricultural and Mechanical College of Texas, Ser. 4, 2, 5 By: Ball O. M.
journalAt: Annales historico-naturales Musei Nationalis Hungarici, 57 By: Rásky K.
journalAt: Annals of Botany, 25, 98 By: Bailey I. W.
journalAt: Transactions and proceedings of the Palaeontological Society of Japan, New Series, 66 By: Matsuo H.
journalAt: Palaeontographica, Abtheilung, B, Paläophytologie, 273, 4-6 By: Kvaček Z., Wilde V.
journalAt: Micropaleontology, 1971, 17, 3 By: Hall J. W., Bergad R. D.