Columbia subject headings:
Harvard subject headings:
Canals--Economic aspects--China--Shandong Sheng--History.
Canals--Social aspects--China--Shandong Sheng--History.
Shandong Sheng (China)--Social Conditions.
Princeton subject headings:
Canals--China--Shandong Sheng.
Canals--Economic aspects--China--Shandong Sheng--History.
Canals--Social aspects--China--Shandong Sheng--History.
Shandong Sheng (China)--Economic conditions.
Shandong Sheng (China)--Social conditions.