Narrower Terms (8)

• Classification--Books--Chemical warfare
• Decontamination (from gases, chemicals, etc.)
• Defoliants--War use
• ▶ Gases, Asphyxiating and poisonous--War use
• ▶ Herbicides--War use
• ▶ Incendiary weapons
• Libraries--Special collections--Chemical warfare
• Smoke screens