Columbia subject headings:
Groundwater flow--Mathematical models--Handbooks, manuals, etc.
Groundwater--Pollution--Mathematical models--Handbooks, manuals, etc.
Harvard subject headings:
Groundwater flow--Mathematical models--Handbooks, manuals, etc.
Groundwater--Pollution--Mathematical models--Handbooks, manuals, etc.
Princeton subject headings:
Groundwater flow--Mathematical models--Handbooks, manuals, etc.
Groundwater--Pollution--Mathematical models--Handbooks, manuals, etc.