Columbia subject headings:
Harvard subject headings:
Hydraulic engineering--China--History.
Inland water transportaion--China--History.
Irrigation--Economic aspects--China--History.
Water-supply, Agricultural--China--History.
Princeton subject headings:
Hydraulic engineering--China--History--Addresses, essays, lectures.
Inland water transportation--China--History--Addresses, essays, lectures.
Irrigation--Economic aspects--China--History--Addresses, essays, lectures.
Water-supply, Agricultural--China--History--Addresses, essays, lectures.