At: Časopis pro mineralogii a geologii, 11, 4 By: Obrhel J.
journalAt: Proceedings of the National Institute of Sciences of India, 15, 1 By: Sitholey R. V.
journalAt: Proceedings of the Japan Academy, 45, 8 By: Miki S.
journalAt: Review of Palaeobotany and Palynology, 62, 1–2 By: Tidwell W. D., Parker L. R.
journalAt: Voprosy Mikropaleontologii, 14 By: Menner V. V., Reitlinger E. A.
journalAt: Taxon, 62, 3 By: Greenwood D. R., Hill C. R., Conran J. G.
journalAt: International Journal of Plant Sciences, 172, 7 By: Benedict J. C., DeVore M. L., Pigg K. B.
journalAt: Geologija, 1961, 7 By: Kerčmar D.
journalAt: Acta Societatis Botanicorum Poloniae, 21, 4 By: Szafer W.
journalAt: Acta Societatis Botanicorum Poloniae, 28, 3 By: Kownas S.