At: University of California Publications in Geological Sciences, 35, 1 By: Lakhanpal R. N.
journalAt: Publications of the Carnegie Institution of Washington, 476 By: Condit C.
journalAt: Bulletin of the British Museum (Natural History), Series, Geology, 2, 7 By: Chandler M. E. J.
journalAt: Oregon State Monographs, Series, Studies in Geology, 4 By: Sanborn E. I.
journalAt: Bulletin of the Faculty of Liberal Arts Ibaraki University, Series, Natural science, 8 By: Ôyama T.
journalAt: Proceedings of the Indian Science Congress, 21 By: Sahni B.
journalAt: Proceedings of the Indian Science Congress, 21 By: Sahni B., Srivastava B. P.
journalAt: Proceedings of the Indian Science Congress, 21 By: Sahni B., Rao H. S.
bookAt: Silur. Syst., London, John Murray, 1839, 1 By: Murchison R. I.
bookAt: Silur. Syst., London, John Murray, 2 By: Murchison R. I.