Columbia subject headings:
Maastricht (Netherlands)--History--20th century.
Netherlands--History--German occupation, 1940-1945.
World War, 1939-1945--Netherlands--Maastricht.
Harvard subject headings:
Maastricht (Netherlands)--History--20th century.
Netherlands--History--German occupation, 1940-1945.
World War, 1939-1945--Netherlands--Maastricht.
Princeton subject headings: