Columbia subject headings:
Harvard subject headings:
Einstein, Albert, 1879-1955
Mathematics--History.
Maxwell, James Clerk, 1831-1879
Physicists--Biography
Physics--History.
Science--Popular works
Scientists--Biography
Princeton subject headings:
Einstein, Albert, 1879-1955.
Mathematics--History.
Maxwell, James Clerk, 1831-1879.
Physicists--Biography.
Physics--History.
Science--Popular works.
Scientists--Biography.