Columbia subject headings:
Harvard subject headings:
Fetus--Effect of radiation on
Pregnant women--Employment--United States.
Radiation workers--Health and hygiene--United States.
Radiation--Dosage--Standards--United States.
Princeton subject headings:
Fetus--Effect of radiation on.
Pregnant women--Employment--United States.
Radiation workers--Diseases--United States.
Radiation--Dosage--Standards--United States.