Columbia subject headings:
Saint Petersburg (Russia)--Guidebooks.
Saint Petersburg (Russia)--History--20th century.
Harvard subject headings:
Saint Petersburg (Russia)--Buildings, structures, etc.
Saint Petersburg (Russia)--History--20th century.
Saint Petersburg (Russia)--Miscellanea.
Princeton subject headings:
Saint Petersburg (Russia)--Buildings, structures, etc.
Saint Petersburg (Russia)--History--20th century.
Saint Petersburg (Russia)--Miscellanea.
Trivia and miscellanea.