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. Album général des diatomées marines, d'eau douce ou fossiles : album représentant tous les genres de diatomées et leurs principales espèces. Diatoms. Penium oblongum Penium Ralfsii. Penium crassiusculum. 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 Coupin, Henri, b. 1868. Paris : H. Coupin
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Keywords: ., bookcollectionbiodiversity, bookleafnumber22, booksubjectdiatoms