Columbia subject headings:
Popper, Karl R. (Karl Raimund), 1902-1994.
Rationalism--History--20th century.
Sociology--Philosophy--History--20th century.
Sociology.
Harvard subject headings:
Popper, Karl R. (Karl Raimund), 1902-1994--Sociology.
Rationalism--History--20th century.
Sociology--Philosophy--History--20th century.
Princeton subject headings:
Popper, Karl R. (Karl Raimund), 1902-1994.
Rationalism--History--20th century.
Sociology--Philosophy--History--20th century.