Columbia subject headings:
Architectural drawing--20th century--Exhibitions.
Architectural drawing--21st century--Exhibitions.
Grassi, Giorgio, 1935---Exhibitions.
Harvard subject headings:
Architectural drawing--20th century--Exhibitions.
Architectural drawing--21st century--Exhibitions.
Grassi, Giorgio, 1935---Exhibitions.
Princeton subject headings:
Architectural drawing--20th century--Exhibitions.
Architectural drawing--21st century--Exhibitions.
Grassi, Giorgio, 1935---Exhibitions.