Columbia subject headings:
Harvard subject headings:
Communism--China--Ningyuan Xian--History.
Princeton subject headings:
Communism--China--Ningyuan Xian (Hunan Sheng, China)--History--Periodicals.
Facsimiles.
Ning-yüan hsien (Hunan Sheng, China)--History--Sources.
Zhongguo gong chan dang--History--Sources.