Columbia subject headings:
Harvard subject headings:
Qingdao (China)--Aerial views.
Qingdao (China)--History.
Princeton subject headings:
Architecture, German--China--Qingdao--History--20th century.
Early maps--China--Qingdao.
Historic buildings--China--Qingdao--History--20th century.
Maps.
Qingdao (China)--Buildings, structures, etc.
Qingdao (China)--Historical geography--Maps.