Columbia subject headings:
Popper, Karl R. (Karl Raimund), 1902-1994.
Rationalism--History--20th century.
Whewell, William, 1794-1866.
Harvard subject headings:
Popper, Karl R. (Karl Raimund), 1902-1994.
Rationalism--History--20th century.
Whewell, William, 1794-1866.
Princeton subject headings:
Methodology--History.
Popper, Karl R. (Karl Raimund), 1902-1994.
Rationalism--History--19th century.
Rationalism--History--20th century.
Science--Philosophy--History.
Whewell, William, 1794-1866.