Columbia subject headings:
Milan (Italy)--Buildings, structures, etc.
Milan (Italy)--Pictorial works.
Piazza Mercanti (Milan, Italy)
Harvard subject headings:
Milan (Italy)--Buildings, structures, etc.
Milan (Italy)--Pictorial works.
Piazza Mercanti (Milan, Italy)
Piazza dei Mercanti (Milan, Italy)
Princeton subject headings:
Milan (Italy)--Buildings, structures, etc.
Milan (Italy)--Description and travel--Pictorial works.
Piazza Mercanti (Milan, Italy)