[On so-called ineffective doses of toxic substances].
D000641:Ammonia / Q000592:standards; D002245:Carbon Dioxide / Q000592:standards; D002248:Carbon Monoxide / Q000592:standards; D006801:Humans; D011042:Poisons / Q000592:standards*
D011042:Poisons; D002245:Carbon Dioxide; D000641:Ammonia; D002248:Carbon Monoxide
O tak nazyvaemykh nedeĭstviuushchikh dozakh toksicheskikh veshchestv.