Columbia subject headings:
Government purchasing--Corrupt practices--European Union countries--Congresses.
Public contracts--Corrupt practices--European Union countries--Congresses.
Harvard subject headings:
Government purchasing--Corrupt practices--Europe--Congresses.
Government purchasing--Corrupt practices--European Union countries--Congresses.
Public contracts--Corrupt practices--Europe--Congresses.
Public contracts--Corrupt practices--European Union countries--Congresses.
Princeton subject headings:
Government purchasing--Corrupt practices--Europe--Congresses.
Public contracts--Corrupt practices--Europe--Congresses.