Columbia subject headings:
Nuclear power plants--Environmental aspects--Pennsylvania--Harrisburg Region.
Radiation--Accidents.
Radiation--Dosage.
Radiation--Toxicology.
Radioactive pollution--Pennsylvania--Harrisburg Region--Measurement.
Three Mile Island Nuclear Power Plant (Pa.)
Harvard subject headings:
Environmental protection--United States
Nuclear power plants--Accidents
Radiation--Toxicology
Princeton subject headings: