title: [Maximum permissible exposure level. Problems of definition and use].
mesh_terms: D000818:Animals; D002247:Carbon Isotopes; D004781:Environmental Exposure; D004782:Environmental Health; D006801:Humans; D008452:Maximum Allowable Concentration; D009787:Occupational Medicine
chemical_list: D002247:Carbon Isotopes
vernacular_title: MAK-Werte: probleme der Aufstellung und Anwendung.