title: [Further studies on the biological effect of fluorine (preliminary report)].
mesh_terms: D004245:DMF Index; D005457:Fluoridation; D005459:Fluorides / Q000494:pharmacology; D009216:Myopia / Q000517:prevention & control
chemical_list: D005459:Fluorides
vernacular_title: Prinos kum biologichnoto deĭstvie na fluora. (Predvaritelno suobshtenie)