Columbia subject headings:
Architectural drawing--20th century.
Architecture--Notebooks, sketchbooks, etc.
Kahn, Louis I., 1901-1974--Notebooks, sketchbooks, etc.
Landscape drawing--20th century.
Le Corbusier, 1887-1965--Notebooks, sketchbooks, etc.
Siza, Álvaro, 1933---Notebooks, sketchbooks, etc.
Harvard subject headings:
Architectural drawing
Kahn, Louis I., 1901-1974.
Le Corbusier, 1887-1965
Siza, Álvaro, 1933-
Princeton subject headings:
Architectural drawing--20th century.
Architecture--Sketch-books.
Kahn, Louis I., 1901-1974--Notebooks, sketchbooks, etc.
Landscape drawing--20th century.
Le Corbusier, 1887-1965--Notebooks, sketchbooks, etc.
Siza, Álvaro, 1933---Notebooks, sketchbooks, etc.
Sketchbooks.