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| | Skylab |
 | | The schedule was predicated upon non-interference with the basic Apollo lunar landing program, minimum modifications to basic Apollo hardware, and compatibility with existing Apollo launch vehicles. |
 | | Because of the Apollo 204 accident in January and the resulting program delays, NASA realigned its Apollo and AAP launch schedules. |
 | | The reduced program called for three Saturn IB and three Saturn V launches, including one Workshop launched on a Saturn IB, one Saturn V Workshop, and one ATM. |
| www.astronautix.com /craft/skylab.htm (8093 words) |
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