. Bulletin de l'Acadmie impriale des sciences de Science; Science -- Soviet Union. 407 Bulletin de l'/tcadémie Impërlale 40S Fig. 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 Imperatorskaia Akademiia nauk (Russia). [St. -Ptersbourg], Acadmie impriale des sciences

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