41
Published 1874
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43
47
by Heiß, Ludwig.
Published 1875
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49
by Altum, Bernard.
Published 1876
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Electronic
51
by Wagner, Hermann.
Published 1876
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Electronic
53
by Zöllner, Julius.
Published 1877
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Electronic
54
by Gauß, Carl Friedrich.
Published 1877
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Electronic
56
by Luckenbacher, Franz.
Published 1877
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Electronic
57
by Hager, Hermann.
Published 1877
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Electronic
58
by Winnecke, F. A. T.
Published 1877
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Electronic
59
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