Columbia subject headings:
Abortion--Moral and ethical aspects.
Fetus--Legal status, laws, etc.
Fetus--Physiology.
Right to life.
Harvard subject headings:
Abortion--Moral and ethical aspects
Fetus--Legal status, laws, etc.
Fetus--Moral and ethical aspects.
Fetus--Physiology
Right to life.
Princeton subject headings:
Abortion--Moral and ethical aspects.
Fetus--Legal status, laws, etc.
Fetus--Physiology.
Right to life.