title: Johann Heller and the nitric acid ring test.
authors.forename: R A
authors.initials: RA
authors.lastname: Kyle
authors.forename: M A
authors.initials: MA
authors.lastname: Shampo
mesh_terms: D001317:Austria; D002624:Chemistry, Clinical / Q000266:history; D003604:Czechoslovakia; D049672:History, 19th Century; D009566:Nitrates / Q000266:history; D017942:Nitric Acid; D010678:Philately; D011507:Proteinuria / Q000175:diagnosis / Q000266:history
chemical_list: D009566:Nitrates; D017942:Nitric Acid