Columbia subject headings:
Architecture--Russia (Federation)--History--20th century.
Avant-garde (Aesthetics)--Russia (Federation)
Leonidov, Ivan I., 1902-1959.
Unbuilt architectural projects--Russia (Federation)--20th century.
Harvard subject headings:
Architecture--Russia (Federation)--Moscow--Designs and plans.
Leonidov, Ivan I., 1902-1959--Catalogs.
Princeton subject headings:
Architecture--Russia (Federation)--Moscow--Designs and plans.
Catalogs.
Leonidov, Ivan I., 1902-1959--Catalogs.