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C.G. Ehrenberg, Symb. Phys.: t. 4 (1900) [C.G. Ehrenberg] [35]
drawing: C.G. Ehrenberg [29]
Illustration contributed by:
Bibliothèque de l’Université de Strasbourg, France
C.G. Ehrenberg, Symb. Phys.: t. 4 (1900) [C.G. Ehrenberg]
