Columbia subject headings:
Petrov-Vodkin, Kuzʹma Sergeevich, 1878-1939--Catalogs.
Harvard subject headings:
Petrov-Vodkin, Kuzʹma Sergeevich, 1878-1939--Catalogs.
Princeton subject headings:
Petrov-Vodkin, Kuzʹma Sergeevich, 1878-1929--Catalogs.