Columbia subject headings:
Belgium--History--Sources.
Brabant (Belgium)--Census.
Brabant (Belgium)--Statistics.
Harvard subject headings:
Belgium (Belgium)--History--Sources.
Belgium--History--Sources.
Brabant (Belgium)--Census.
Brabant (Belgium)--Statistics.
Princeton subject headings:
Belgium--History--Sources.
Brabant--Census.
Brabant--Statistics.
Statistics.