Columbia subject headings:
Communism--China--Yan'an (Shaanxi Sheng)
Yan'an (Shaanxi Sheng, China)--History--20th century.
Zhongguo gong chan dang--History.
Harvard subject headings:
Communism--China--Yan'an (Shaanxi Sheng)
Yan'an (Shaanxi Sheng, China)--History--20th century.
Zhongguo gong chan dang--History.
Princeton subject headings: