At: Novon, 24, 2 By: Srivastava G., Mehrotra R. C.
journalAt: Comptes rendus de l'Académie des sciences, Series, 2, Mécanique, Physique, Chimie, Sciences de l'Univers, Sciences de la Terre, 315, 12 By: Gerrienne P.
journalAt: Geologija, 28-29 By: Buser S., Radoičić R.
bookAt: De Balano, Dresdae [Dresden] et Lipsiae [Leipzig], prostat in libraria Arnoldia By: Petzholdt A.
bookAt: Casuarin., Vratislaviae [Wroclaw], typis C.H. Storchii et Socii By: Stache G.
bookAt: Cycad. Foss., Jena [Ienae], typis Schreiberi et fil. By: Hallier E.
bookAt: Filic. Ectyp., Halae [Halle], Ploetz [formis expressus Ploetzianis] By: Rost W.
bookAt: Fl. Foss., Vratislaviae [Breslau], Typis Grassii, Barthii et Sociorum By: Göppert H. R.
journalAt: Nova acta physico-medica Academiae Caesareae Leopoldino-Carolinae Naturae Curiosorum, 18, 2 By: Göppert H. R.
bookAt: De Form. Tert. Halae, Halis [Halle], Typis Ploetzianis By: Andrae C.