Columbia subject headings:
Harvard subject headings:
Channels (Hydrolic engineering)--China--History--Indexes.
China--History--Sung dynasty, 960-1275--Indexes.
Rivers--China--History--Indexes.
Tuotuo, 1313-1355. Sung shih. Ho chʻü chih--Indexes.
Princeton subject headings:
Channels (Hydraulic engineering)--China--History--Indexes.
China--History--Song dynasty, 960-1279--Indexes.
Indexes.
Rivers--China--History--Indexes.
Tuotuo, 1313-1355. Song shi. He qu zhi--Indexes.