Columbia subject headings:
Harvard subject headings:
Ulchin-gun (Korea)--Economic conditions.
Ulchin-gun (Korea)--Religious life and customs.
Ulchin-gun (Korea)--Social conditions.
Princeton subject headings:
Ulchin-gun (Korea)--Economic conditions.
Ulchin-gun (Korea)--Religious life and customs.
Ulchin-gun (Korea)--Social conditions.