title: Paul Karrer, 21 April 1889--18 June 1971.
authors.forename: O
authors.initials: O
authors.lastname: Isler
mesh_terms: D001671:Biochemistry / Q000266:history*; D002621:Chemistry / Q000266:history*; D049711:History, Modern 1601-; D013557:Switzerland; D014815:Vitamins / Q000266:history*
chemical_list: D014815:Vitamins