Columbia subject headings:
Harvard subject headings:
Communism--China--Shan Gan Ning bian qu--Chronology.
Shan Gan Ning Bian Qu (China)--History--Chronology.
Princeton subject headings:
Communism--China--Shan Gan Ning bian qu--Chronology.
Shan Gan Ning Bian Qu (China)--History--Chronology.