Columbia subject headings:
Architecture--Competitions--Sweden--History--19th century.
Architecture--Competitions--Sweden--History--20th century.
Architecture--Sweden--History--19th century.
Architecture--Sweden--History--20th century.
Harvard subject headings:
Architecture--Competitions--Sweden--History.
Architecture--Sweden--19th century--History.
Architecture--Sweden--20th century--History.
Architecture--Sweden--History--19th century.
Architecture--Sweden--History--20th century
Princeton subject headings:
Architecture, Modern--19th century--Sweden.
Architecture, Modern--20th century--Sweden.
Architecture--Competitions--Sweden--History--19th century.
Architecture--Competitions--Sweden--History--20th century.