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1 NASA: Constellation Program Cost and Schedule Will Remain Uncertain Until a Sound Business Case Is Established [科技报告]

作者:United States. Government Accountability Office.

发布日期:2009

关键词:Government accountability -- United States.;government operations;...

发布机构:United States. Government Accountability Office.

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2 NASA: Commercial Partners Are Making Progress, but Face Aggressive Schedules to Demonstrate Critical Space Station Cargo Transport Capabilities [科技报告]

作者:United States. Government Accountability Office.

发布日期:2009

关键词:Government accountability -- United States.;space;...

发布机构:United States. Government Accountability Office.

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