Columbia subject headings:
Maps.
Sydney (N.S.W.)--Maps.
Sydney (N.S.W.)--Social conditions--Maps.
Harvard subject headings:
Cartography--Data processing
Sydney Metropolitan Area (N.S.W.)--Census, 1986--Maps.
Sydney Metropolitan Area (N.S.W.)--Population--Maps.
Sydney Metropolitan Area (N.S.W.)--Social conditions--Maps.
Princeton subject headings: