Columbia subject headings:
Asbestos--Standards--Congresses.
Asbestos--Toxicology--Congresses.
Silicates--Standards--Congresses.
Silicates--Toxicology--Congresses.
Harvard subject headings:
Asbestos--Standards--Congresses.
Asbestos--Toxicology--Congresses.
Silicates--Standards--Congresses.
Silicates--Toxicology--Congresses.
Princeton subject headings:
Asbestos--Standards--Congresses.
Asbestos--Toxicology--Congresses.
Silicates--Standards--Congresses.
Silicates--Toxicology--Congresses.