Category:Quotes from Ivan Gubkin
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Media in category "Quotes from Ivan Gubkin"
The following 3 files are in this category, out of 3 total.
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1937-March-5-GubkinIM.png 1,560 × 1,420; 483 KB
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1939-Gubkin-txt.png 2,219 × 1,158; 259 KB
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GubkinIM-1940.png 1,750 × 845; 602 KB