![Labeled technical diagram of the Apollo-Soyuz Test Project Docking Module](https://www.nasa.gov/wp-content/uploads/2024/01/as-9.png)
Apollo-Soyuz Test Project Docking Module
From Prelaunch Mission Operation Report No. M-966-75-01, July 7, 1975, page 12.
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From Prelaunch Mission Operation Report No. M-966-75-01, July 7, 1975, page 12.