Univ., Diss--Bern.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/246371074 |
| Date | January 1992 |
| Creators | Ritter, Michael. |
| Publisher | Bern : Stämpfli, |
| Source Sets | OCLC |
| Language | Undetermined |
| Detected Language | German |
| Coverage | Liechtenstein. |
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