MIL-L-81561G (AMENDMENT 1), MILITARY SPECIFICATION: LIFE PRESERVER ASSEMBLIES, INFLATABLE, AIRCREWMEN AND PASSENGER, CEMENTED AND HEAT SEALED (18-OCT-2000)
MIL-L-81561G (AMENDMENT 1), MILITARY SPECIFICATION: LIFE PRESERVER ASSEMBLIES, INFLATABLE, AIRCREWMEN AND PASSENGER, CEMENTED AND HEAT SEALED (18-OCT-2000).