🌐EnglishEnglishDeutschEspañolPolskiРусский中文日本語EntityQ1965612· pop 6· linked from 12 articlesBlue CrossWorld War I chemical agentAvailable in 6 languagesEspañolDeutschРусскийPolskiUkrainianvia Wikidata sitelinks · CC0ConnectionsT-1123Entitymustard gasEntityCategoriesChemical weapons in World War IOrganoarsenic chloridesPulmonary agentsWeapons and ammunition introduced in 1917