1. Defense against chemical attack Author(s): United States. Army. Chemical Warfare Service, author. Publication: Washington : U.S. Government Printing Office : For sale by the Superintendent of Documents, 1946 Subject(s): Chemical Warfare -- prevention & controlChemical Warfare AgentsRespiratory Protective Devices
2. Defense against chemical attack Author(s): United States. Army. Chemical Warfare Service, author. Publication: Washington : U.S. Government Printing Office ; For sale by the Superintendent of Documents, 1940 Subject(s): Chemical Warfare -- prevention & controlChemical Warfare AgentsRespiratory Protective Devices
3. Defense against chemical attack Author(s): United States. Army. Chemical Warfare Service, author. Publication: Washington : U.S. Government Printing Office : For sale by the Superintendent of Documents, 1942 Subject(s): Chemical Warfare -- prevention & controlChemical Warfare AgentsRespiratory Protective Devices
