Helmut Schäfer (Q29053988)
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amateur mineralogist of Mayen-Kürrenberg
Language | Label | Description | Also known as |
---|---|---|---|
English | Helmut Schäfer |
amateur mineralogist of Mayen-Kürrenberg |
Language | Label | Description | Also known as |
---|---|---|---|
English | Helmut Schäfer |
amateur mineralogist of Mayen-Kürrenberg |