MIL-L-81561G (SUPPLEMENT 1), MILITARY SPECIFICATION: LIFE PRESERVER ASSEMBLIES, INFLATABLE, AIRCREWMEN AND PASSENGER, CEMENTED AND HEAT SEALED (01-JUN-1994)
MIL-L-81561G (SUPPLEMENT 1), MILITARY SPECIFICATION: LIFE PRESERVER ASSEMBLIES, INFLATABLE, AIRCREWMEN AND PASSENGER, CEMENTED AND HEAT SEALED (01-JUN-1994).