| LC control no. | no2009143758 |
|---|---|
| Personal name heading | Haeckel, Walter, 1868-1939 |
| Variant(s) | Haeckel, Ernst Walther, 1868-1939 |
| Found in | Autograph letter signed from Ernst Heinrich Philipp August Haeckel, Jena, to Walter Haeckel, 1894 May 3 Deutsche nationalbibliothek, [via VIAF, 2009 September 3] (hdg: Haeckel, Walter, 1868-1939; Haeckel, Ernst Walter; Haeckel, Ernst Walther) |
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