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| Soyuz 10 launch cover, postmarked on April 23, 1971, signed by Vladimir Shatalov, Aleksei Yeliseyev, Nikolai Rukavishnikov. |
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| Soyuz 10 docked with Salyut, postmarked on April 24, 1971, signed by Vladimir Shatalov, Aleksei Yeliseyev, Nikolai Rukavishnikov. |
