Columbia subject headings:
Limburg (Belgium : Province)--History.
Limburg (Belgium : Province)--Rural conditions.
Liège (Belgium : Province)--History.
Liège (Belgium : Province)--Rural conditions.
Maastricht Region (Netherlands)--History.
Maastricht Region (Netherlands)--Rural conditions.
Harvard subject headings:
Liège (Belgium : Province)--History.
Liège (Belgium : Province)--Rural conditions.
Limburg (Belgium : Province)--History.
Limburg (Belgium : Province)--Rural conditions.
Maastricht Region (Netherlands)--History.
Maastricht Region (Netherlands)--Rural conditions.
Princeton subject headings:
Liège (Belgium : Province)--History.
Liège (Belgium : Province)--Rural conditions.
Limburg (Belgium)--History.
Limburg (Belgium)--Rural conditions.
Maastricht region, Netherlands--History.
Maastricht region, Netherlands--Rural conditions.