title: Toxicology of herbicides with special reference to the bipyridiliums.
mesh_terms: D006540:Herbicides / Q000633:toxicity*; D006801:Humans; D010269:Paraquat / Q000633:toxicity*; D011726:Pyridinium Compounds / Q000633:toxicity*
chemical_list: D006540:Herbicides; D011726:Pyridinium Compounds; D010269:Paraquat