MIL-A-51384A (AMENDMENT-1), MILITARY SPECIFICATION: ALARM UNIT, CHEMICAL AGENT AUTOMATIC ALARM: ABCA-M42 (20-OCT-1980) [S/S BY MIL-DTL-51384 (CONTROLLED DISTRIBUTION DOCUMENT (DIST. STATEMENT \"C\")]

MIL-A-51384A (AMENDMENT-1), MILITARY SPECIFICATION: ALARM UNIT, CHEMICAL AGENT AUTOMATIC ALARM: ABCA-M42 (20-OCT-1980) [S/S BY MIL-DTL-51384 (CONTROLLED DISTRIBUTION DOCUMENT (DIST. STATEMENT \"C\")].