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bookAt: Paleontol. Rossii, Sanct-Petersburg, tipografija Ya. Ionsona [E. Pratz or R. Golike], Drevnij Period, 2 By: von Eichwald K.
bookAt: Arkheotsiaty Sibiri, Moscow & Leningrad, Geolizdat, 1 By: Vologdin A. G.
journalAt: Geologicheskie issledovaniya i razvedyvatel'nye raboty po linii Sibirskoj zheleznoj dorogi, 29 By: Reis O. M.
journalAt: Neues Jahrbuch für Geologie und Paläontologie Abhandlungen, 105, 2 By: Leggewie W., Schonefeld W.
bookAt: Fejlödést. Növényrend., Budapest, Tankönyvkiado By: Soó K. R.
journalAt: Review of Palaeobotany and Palynology, 289, 104412 By: Nosova N. V.
journalAt: American Journal of Botany, 64, 2 By: Millay M. A., Taylor T. N.
journalAt: Records of the Geological Survey of India, 69, 4 By: Sahni M. R.
journalAt: Professional Papers / United States Geological Survey, 1969, 613, D By: Ash S.