The significance of chemical and biological warfare for the people.
D001694:Biological Warfare; D002618:Chemical Warfare; D002619:Chemical Warfare Agents / Q000506:poisoning*; D002959:Civil Defense; D006076:Government; D006540:Herbicides; D007391:International Cooperation; D008397:Masks; D008891:Military Science; D011057:Politics; D013665:Tear Gases; D014481:United States
D002619:Chemical Warfare Agents; D006540:Herbicides; D013665:Tear Gases