Columbia subject headings:
Metals--Toxicology--Congresses.
Mineral metabolism--Congresses.
Trace elements--Metabolism--Congresses.
Vitamins--Metabolism--Congresses.
Harvard subject headings:
Metals--Toxicology--Congresses.
Mineral metabolism--Congresses.
Trace elements--Metabolism--Congresses.
Vitamins--Metabolism--Congresses.
Princeton subject headings:
Metals--Toxicology--Congresses.
Mineral metabolism--Congresses.
Trace elements--Metabolism--Congresses.
Vitamins--Metabolism--Congresses.