Columbia subject headings:
Harvard subject headings:
Communism--China--Heilongjiang Sheng.
Zhongguo gong chan dang--History--Chronology.
Princeton subject headings:
Communism--China--Heilongjiang Sheng.
Heilongjiang Sheng (China)--History--Chronology.
Zhongguo gong chan dang--History--Chronology.