Author: Köthe, A., 1985.:
Title: Kalkiges Nannoplankton aus dem Palägen Nordwestdeutschlands.
Description: [Geol. Jahrb., Reihe A, 89.] Hannover. Pp. 144, many microphotos on 16 pls., 7 tabs., 12 figs., refs. Orig. stiff wrs.

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