Columbia subject headings:
Fluorides--Environmental aspects.
Fluorides--Therapeutic use.
Fluorides--Toxicology.
Fluorine--Environmental aspects.
Fluorine--Toxicology.
Harvard subject headings:
Fluorides--Environmental aspects.
Fluorides--Therapeutic use.
Fluorides--Toxicology.
Fluorine--Environmental aspects.
Fluorine--Toxicology
Princeton subject headings:
Flourine--Environmental aspects.
Fluorides--Environmental aspects.
Fluorides--Physiological effects.
Fluorides--Toxicology.
Fluorine--Physiological effects.
Fluorine--Toxicology.