Columbia subject headings:
Cabinet officers--Selection and appointment--United States.
Government executives--Selection and appointment--United States.
Science and state--United States.
Technology and state--United States.
Harvard subject headings:
Cabinet officers--Selection and appointment--United States.
Engineers in government--Selection and appointment--United States.
Government executives--Selection and appointment--United States.
Scientists in government--Selection and appointment--United States.
Princeton subject headings: