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