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Program Design Language
in NASA
Pocket Dosimeter-Low
in NASA
Procedure Distribution List
in NASA
128720128722128721
Similar to PDL
A/L - Approach and Landing
AA - Astronomical Applications
AA - Adverse Action
AA - Antenna Assembly
AAA - Avionics Air Assembly
AAC - Aft Access Closure
AACB - Aeronautics and Astronautics Coordinating Board
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