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N PR 8715 24 Need help?
Subject: Planetary Protection Provisions for Robotic Extraterrestrial Missions
Responsible Office Code: GA
Effective Date: September 24, 2021
Expiration Date: September 24, 2026
Cancellation Date:  
Document Cancelling this Directive (if Cancelled):  
Documents Cancelled by this Directive:
N PR 8020 12D   -   Show History