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Gemini 4 : the NASA mission reports
- "Gemini 4, America's first space walk"
- "Gemini 4, America's first space walk"@en
- "Gemini 4 : [america's first space walk] : the NASA mission reports ; [(from the archives of the National Aeronautics and Space Administration)]"
- "Gemini 4 : the NASA mission reports"
- "Gemini 4 : the NASA mission reports"@en