Columbia subject headings:
Selenium--Bioaccumulation--Congresses.
Selenosis--Congresses.
Water--Pollution--Toxicology--Congresses.
Harvard subject headings:
Selenium--Bioaccumulation--Congresses.
Selenosis--Congresses.
Water--Pollution--Toxicology--Congresses
Princeton subject headings:
Selenium--Bioaccumulation--Congresses.
Selenosis--Congresses.
Water--Pollution--Toxicology--Congresses.