Columbia subject headings:
Harvard subject headings:
Changzhi Shi (China)--Politics and government.
Human services--China--Changzhi Shi--History.
Public welfare--China--Changzhi Shi--History.
Princeton subject headings:
Changzhi Shi (China)--Politics and government.
Human services--China--Changzhi Shi--History.
Public welfare--China--Changzhi Shi--History.