. Die Opisthobranchiata der Siboga-expedition. Opisthobranchia. R. Bergli. del. P. W. M. Trap, imiii. 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 Bergh, Rudolph, 1824-1909. Leiden : Buchhandlung und druckerei vormals E. J. Brill

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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherleidenbuchhandlung