Columbia subject headings:
Transylvania (Romania)--Census--20th century.
Universitatea "Babeș-Bolyai."
Harvard subject headings:
Transylvania (Romania)--Census, 1930.
Transylvania (Romania)--Census--20th century.
Transylvania (Romania)--Population--Statistics.
Universitatea "Babeș-Bolyai."
Princeton subject headings:
Statistics.
Transylvania (Romania)--Census, 1930.
Transylvania (Romania)--Population--Statistics.