O stroenii protoplasta tsianovykh vodoroslei (Cyanophyceae s. phycochromaceae) Ueber den Bau des Cyanophceen-Protoplastes Nadson, G. A. (Georgii Adamovich), 1867-1940 creator text book S.-Peterburg Tip. V. Demakova 1895 1895
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GER RUS In Russian ; summary also in German. Cyanobacteria Protoplasm QR99.63 .N33 1895 https://www.biodiversitylibrary.org/bibliography/60209 28827609 10.5962/bhl.title.60209 AGL