MIL-C-51179C, MILITARY SPECIFICATION: CARRIER, CHEMICAL-BIOLOGICAL MASK, ABC-M13A1 (01-NOV-1990) [NO S/S DOCUMENT]
MIL-C-51179C, MILITARY SPECIFICATION: CARRIER, CHEMICAL-BIOLOGICAL MASK, ABC-M13A1 (01-NOV-1990) [NO S/S DOCUMENT]., This specification covers one type of chemical-biological mask carrier.