Columbia subject headings:
Bohr, Niels, 1885-1962.
Physicists--Denmark--Biography.
Physics--History.
Harvard subject headings:
Bohr, Niels, 1885-1962.
Physicists--Denmark--Biography
Physics--History.
Princeton subject headings:
Bohr, Niels, 1885-1962.
Physicists--Denmark--Biography.
Physics--History.