Columbia subject headings:
Behavioral scientists--Supply and demand--United States.
Medical scientists--Supply and demand--United States.
Psychological research personnel--Supply and demand--United States.
Harvard subject headings:
Behavioral scientists--Supply and demand--United States.
Medical scientists--Supply and demand--United States.
Princeton subject headings:
Behavioral scientists--Supply and demand--United States.
Medical scientists--Supply and demand--United States.
Psychological research personnel--Supply and demand--United States.