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by Irmer, Georg 1853-1931
Published 1914
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6
Published 1915
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7
Published 1915
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8
by Grimme, Hubert 1864-1942
Published 1915
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9
by Meyer, Eduard 1855-1930
Published 1915
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10
by Heyde, Ludwig, 1888-1961.
Published 1915
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11
by Wundt, Wilhelm, 1832-1920.
Published 1915
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12
by Meyer, Eduard 1855-1930
Published 1915
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13
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14
by Wundt, Wilhelm, 1832-1920.
Published 1915
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16
by Haeckel, Ernst, 1834-1919.
Published 1915
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17
by Prigge, Erich R. 1878-1955.
Published 1916
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18
by Stiehl, Otto, 1860-1940.
Published 1916
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19
by Grelling, Kurt 1886-1942
Published 1916
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20
by Kautsky, Karl, 1854-1938.
Published 1916
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