Columbia subject headings:
Harvard subject headings:
Registers of births, etc.--Korea (South)--Sanchʻŏng-gun.
Sanch'ŏng-gun (Korea)--Census.
Sanch'ŏng-gun (Korea)--Population--History--19th century.
Princeton subject headings:
Registers of births, etc.--Korea (South)--Sanch'ŏng-gun.
Sanch'ŏng-gun (Korea)--Census.
Sanch'ŏng-gun (Korea)--Population--History--19th century.