Columbia subject headings:
Fluorocarbons--Threshold limit values.
Fluorocarbons--Toxicology.
Medicine, Naval.
Submarines (Ships)
Threshold limit values (Industrial toxicology)
Harvard subject headings:
Fluorocarbons--Threshold limit values.
Fluorocarbons--Toxicology.
Fluorohydrocarbons--Threshold limit values.
Fluorohydrocarbons--Toxicology.
Medicine, Naval.
Submarines (Ships)
Threshold limit values (Industrial toxicology)
Princeton subject headings: