List of human spaceflights to Mir
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Gregory J. Harbaugh
List of Purdue University alumni
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University of Houston–Clear Lake
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List of spacewalks and moonwalks 1965–1999
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List of spaceflight records
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STS-82
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STS-71
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STS-61
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STS-54
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STS-39
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Gregory (given name)
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Willoughby, Ohio
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Gregory Harbaugh
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