. Die Cephalopoden der Plankton-Expedition : Zugleich eine monographische Übersicht der Oegopsiden Cephalopoden. Plankton Expedition (1889); Cephalopoda; Oegopsida. 15 18 I. \ I 16 19 17. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Pfeffer, G. (Georg), 1854-1931. Kiel : Lipsius & Tischer

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplankto, bookyear1912