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N PR 8020 12C Need help?
Status: CANCELLED
Subject: Planetary Protection Provisions for Robotic Extraterrestrial Missions
Responsible Office Code: DA
Effective Date: April 27, 2005
Expiration Date: May 27, 2011
Cancellation Date: May 3, 2011 
Document Cancelling this Directive (if Cancelled): N PR 8020 12D
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Documents Cancelled by this Directive:
N PR 8020 12B   -   Show History
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