Columbia subject headings:
Harvard subject headings:
Life--Congresses
Life--Political aspects--Congresses.
Life--Social aspects--Congresses.
Quality of life--Congresses
Well-being--Congresses.
Princeton subject headings:
Life--Congresses.
Life--Political aspects--Congresses.
Life--Social aspects--Congresses.
Quality of life--Congresses.
Well-being--Congresses.