Columbia subject headings:
Political persecution--Soviet Union--Biography.
Smirnov, A. P. (Aleksandr Pavlovich), 1898-1937--Correspondence.
Smirnova, Li︠u︡bovʹ Nikolaevna--Correspondence.
Harvard subject headings:
Princeton subject headings:
Political prisoners--Soviet Union--Correspondence.
Prisoners--Russia (Federation)--Tara (Omskai︠a︡ oblastʹ )--Correspondence.
Smirnov, A. P. (Aleksandr Pavlovich)--Imprisonment--Correspondence.
Smirnov, A. P. (Aleksandr Pavlovich).