Significant mathematics is involved in the construction of an accurate map.
Stamp | Description |
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Germany, 5, 1972 Scott: |
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Germany, 10, 1972 Scott: |
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Germany, 15, 1972 Scott: |
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Germany, 20, 1972 Scott: |
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Germany, 25, 1972 Scott: |
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Germany, 35, 1972 Scott: |