title: The yardstick concept for the hazard evaluation of substances.
mesh_terms: D001673:Biodegradation, Environmental; D055598:Chemical Phenomena; D002621:Chemistry; D004785:Environmental Pollutants / Q000633:toxicity; D005860:Germany, West; D007880:Legislation, Drug; D012306:Risk; D014116:Toxicology
chemical_list: D004785:Environmental Pollutants