About KAMIL'DZHANOV A KH
About Gigiena i Sanitariya
About arsenic oxide
About air pollutant
About Heavy metals and their compounds in general
About Animal and plant damage
About Toxicity of inorganic compounds in general
About 大気中
About 亜ひ酸
About 最大許容濃度
About 衛生学
About 根拠