MIL-STD-1621A (NOTICE 1), MILITARY STANDARD: ACOUSTICAL AND VIBRATIONAL STANDARD REFERENCE QUANTITIES (11 DEC 1991) [NO S/S DOCUMENT]

MIL-STD-1621A (NOTICE 1), MILITARY STANDARD: ACOUSTICAL AND VIBRATIONAL STANDARD REFERENCE QUANTITIES (11 DEC 1991) [NO S/S DOCUMENT]., MIL-STD-1621A(NAVY) , dated 27 August 1973, has been reviewed and determined valid for use in acquisition.