Leipzig, Phil. Diss. v. 31. Jan. 1940.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/459848034 |
| Date | January 1940 |
| Creators | Helbig, Herbert. |
| Publisher | Berlin : Ebering, |
| Source Sets | OCLC |
| Language | German |
| Detected Language | German |
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