At: Palaeobotanist, 1969, 18, 2 By: Awasthi N.
journalAt: Palaeobotanist, 64, 1–2 By: Shukla A., Singh H., Mehrotra R. C.
journalAt: Journal of the Indian Botanical Society, 67 By: Trivedi B. S., Srivastava K.
bookAt: Geol. Indus Sut. Ladakh, Dehra-Dun, Wadia Institute of Himalayan Geology By: Guleria J. S., Thakur B., Virdi N. S., Lakhanpal R. N.
journalAt: Annals of Botany, 31, 71 By: Yasui K.
journalAt: Palaeobotanist, 1968, 17, 3 By: Awasthi N.
journalAt: Zeitschrift der Deutschen Gesellschaft für Geowissenschaften, 163, 3 By: Dolezych M., Estrada S.
journalAt: The Botanique, 15, 1-2 By: Sheikh M. T.
journalAt: Canadian Journal of Botany, 83, 6 By: Bogner J., Hoffmann G. L., Aulenback K. R.
journalAt: Értekezések a természettudományok köréből / Magyar Tudományos Akadémia, 11, 2 By: Staub M.