Columbia subject headings:
Harvard subject headings:
Civil service--Canada--Congresses
Civil service--Europe--Congresses
Civil service--United States--Congresses
Government executives--Canada--Congresses.
Government executives--Europe--Congresses.
Government executives--United States--Congresses.
Princeton subject headings:
Civil service--Canada.
Civil service--Europe.
Civil service--United States.
Government executives--Canada--Congresses.
Government executives--Europe--Congresses.
Government executives--United States--Congresses.