MIL-S-81478C (NOTICE 1), MILITARY SPECIFICATION: SONOBUOY AN/SSQ-57A (17 OCT 1991) [NO S/S DOCUMENT]

MIL-S-81478C (NOTICE 1), MILITARY SPECIFICATION: SONOBUOY AN/SSQ-57A (17 OCT 1991) [NO S/S DOCUMENT]., MIL-S-81478C(AS), DATED 10 APRIL 1985, HAS BEEN REVIEWED AND DETERMINED TO BE VALID FOR USE IN ACQUISITION.