Respiratory protection : an employer's manual.

Mode of access: Internet.

Organizational maintenance repair parts and special tool lists for indicator, outlet valve leakage, M4A1 (FSN 6665-738-2128).

"14 February 1964."

Operator and organizational maintenance manual : indicator, outlet valve leakage, M4A1 (end item code 667).

Includes index.

Operator, organizational, direct support, general support, and depot maintenance manual ... : crimping outfit, hydraulic, voicemitter-outlet valve assembly, ABC-M1.

"June 1968."