Author / Collaborator : Landsberg, Ernst

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  Brief an Herr Geheimrat [Ernst Landsberg]

  Bailleu, Paul ; Landsberg, Ernst

  Berlin-Charlottenburg, 14.09.1914 [14. Sept. [19]14]
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  Brief an Herr Geheimrat [Ernst Landsberg]

  Bailleu, Paul ; Landsberg, Ernst

  Berlin-Charlottenburg, 22.01.1921 [22. Jan. 1921 ...]
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  Brief an Herr Professor [Ernst Landsberg]

  Bailleu, Paul ; Landsberg, Ernst

  Berlin-Charlottenburg, 14.03.1911 [14. März 1911]
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  Brief an Herr Professor [Ernst Landsberg]

  Cardauns, Hermann ; Landsberg, Ernst

  Bonn, 26.06.1908 [26/6 [190]8.]
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  Brief an Hr. Professor [Ernst Landsberg]

  Cardauns, Hermann ; Landsberg, Ernst

  Köln, 20.11.1906 [20/XI 1906.]
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  Brief an Hr. Professor [Ernst Landsberg]

  Cardauns, Hermann ; Landsberg, Ernst

  Bonn, 14.01.1909 [14/1 [190]9]
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  Brief an Hr. Professor [Ernst Landsberg]

  Cardauns, Hermann ; Landsberg, Ernst

  Bonn, 30.11.1910 [30/XI 1910.]
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  Brief an Hr. Professor. [Ernst Landsberg]

  Cardauns, Hermann ; Landsberg, Ernst

  Bonn, 22.06.1908 [22/6 1908]
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  Briefkarte an Hr. Professor. [Ernst Landsberg]

  Cardauns, Hermann ; Landsberg, Ernst

  Bonn, 19.01.1909 [19/1 [190]9]
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  Postkarte an Hr. Professor [Ernst Landsberg]

  Cardauns, Hermann ; Landsberg, Ernst

  Köln, 15.07.1908 [15.7.[19]08 [Poststempel]]
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  Brief an Hr. Professor [Ernst Landsberg]

  Cardauns, Hermann ; Landsberg, Ernst (Ed.) ; Obser, Karl (Ed.) ; Koser, Reinhold (Ed.) ; Landsberg, Ernst

  Bonn, 27.08.1911 [27/VIII 1911.]
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  Brief an Professor Dr. Ernst Landsberg

  Elster, Ernst ; Landsberg, Ernst

  Marburg, 22.12.1905 [den 22. Dezember 1905.]
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  Brief an Professor Dr. Ernst Landsberg

  Elster, Ernst ; Landsberg, Ernst

  Marburg, 04.02.1906 [den 4. Februar 1906.]
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  Brief an Professor Dr. Ernst Landsberg

  Elster, Ernst ; Landsberg, Ernst

  Marburg, 17.02.1906 [den 17 Februar 1906.]
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  Brief an Professor Dr. Ernst Landsberg

  Elster, Ernst ; Landsberg, Ernst

  Marburg, 14.10.1905 [den 14. Oktober 1905.]
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  Brief an Professor Dr. Ernst Landsberg

  Elster, Ernst ; Landsberg, Ernst

  Marburg, 24.08.1905 [den 24. August 1905.]
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  Brief an Professor Dr. Ernst Landsberg

  Elster, Ernst ; Landsberg, Ernst

  Marburg, 02.09.1905 [den 2. September 1905.]
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  Brief an Professor Dr. Ernst Landsberg

  Elster, Ernst ; Landsberg, Ernst

  Marburg, 19.09.1905 [d. 19/9. [19]05]
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  Brief an Professor Dr. Ernst Landsberg

  Elster, Ernst ; Landsberg, Ernst

  Marburg, 13.07.1906 [den 13. Juli 1906]
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  Brief an Professor Dr. Ernst Landsberg

  Elster, Ernst ; Landsberg, Ernst (Ed.) ; Obser, Karl (Ed.) ; Landsberg, Ernst

  Marburg, 25.01.1906 [den 25. Januar 1906.]