Columbia subject headings:
Kama River Valley (Russia)--Antiquities.
Smirnov, A. P. (Alekseĭ Petrovich), 1899-1974.
Tatarstan (Russia)--Antiquities.
Volga River Region (Russia)--Antiquities.
Harvard subject headings:
Smirnov, A. P. (Alekseĭ Petrovich), 1899-1974.
Princeton subject headings: