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Using a 60 cm telescope, he was very adept in creating planetary maps from visual observations.
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134:(7 February 1878 – 15 February 1950) was a Polish-German
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254:. USGS Astrogeology Research Program.
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252:Gazetteer of Planetary Nomenclature
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354:Member of the Tomasz Zan Society
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154:. When the
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