Die Planetariumsmedaille von Hans Erni
| Author | Hans-Ulrich Geiger |
|---|---|
| Published in |
Schweizer Münzblätter = Gazette numismatique suisse, Heft 75 (1969) Swiss Numismatic Gazette |
| Pages | 67 (1 page) |
| Download | https://www.e-periodica.ch/digbib/view?pid=smb-001%3A1968%3A18%3A%3A975 |
| Number | N# L155242 |
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