Columbia subject headings:
Butyl methyl ether--Environmental aspects--United States.
Groundwater--Pollution--United States.
Groundwater--Sampling--United States.
Harvard subject headings:
Butyl methyl ether--Environmental aspects--United States.
Groundwater--Pollution--United States
Groundwater--Sampling--United States.
Princeton subject headings:
Butyl methyl ether--Environmental aspects--United States.
Groundwater--Pollution--United States.
Groundwater--Sampling--United States.