MIL-STD-1621A (NOTICE 1)
MIL-STD-1621A (NOTICE 1), MILITARY STANDARD: ACOUSTICAL AND VIBRATIONAL STANDARD REFERENCE QUANTITIES (11 DEC 1991) ., MIL-STD-1621A(NAVY) , dated 27 August 1973, has been reviewed and determined valid for use in acquisition.
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