Columbia subject headings:
Architecture--Russia (Federation)--Petrogradskiĭ raĭon (Saint Petersburg)
Petrogradskiĭ raĭon (Saint Petersburg, Russia)--Buildings, structures, etc.
Harvard subject headings:
Architecture--Russia (Federation)--Petrogradskiĭ raĭon (Saint Petersburg)
Petrogradskiĭ raĭon (Saint Petersburg, Russia)--Buildings, structures, etc.
Princeton subject headings:
Architecture--Russia (Federation)--Petrogradskiĭ raĭon (Saint Petersburg).
Petrogradskiĭ raĭon (Saint Petersburg, Russia)--Buildings, structures, etc.