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2
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The Soviet encyclopedia of space flight / G.V. Petrovich, editor-in-chief.
- 629.403 K864
- Mir Publishers,
- Moscow :
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Problems in plane geometry / I.F. Sharygin ; translated from the Russian by Leonid Levant.
- 516.22 S5328
- Sharygin, I. F.,
- Mir Publishers,
- Moscow :