Columbia subject headings:
Flood control--Automation--Handbooks, manuals, etc.
Irrigation canals and flumes--Automatic control--Handbooks, manuals, etc.
Irrigation engineering--Handbooks, manuals, etc.
Irrigation scheduling--Data processing--Handbooks, manuals, etc.
Irrigation--Automation--Handbooks, manuals, etc.
Harvard subject headings:
Princeton subject headings:
Irrigation canals and flumes--United States--Automatic control--Handbooks, manuals, etc.
Irrigation engineering--United States--Handbooks, manuals, etc.