Filtering by: Creator Great Britain. Army. General Staff. General Headquarters, Issuing body Remove constraint Creator: Great Britain. Army. General Staff. General Headquarters, Issuing body Format Pamphlets Remove constraint Format: Pamphlets Type Work Remove constraint Type: Work Keyword Unassigned Remove constraint Keyword: Unassigned Location Manuscripts & Archives Research Library, Trinity College Dublin Remove constraint Location: Manuscripts & Archives Research Library, Trinity College Dublin Resource type text Remove constraint Resource type: text Subject Gas masks Remove constraint Subject: Gas masks