Columbia subject headings:
Experience.
Knowledge, Theory of.
Popper, Karl R. (Karl Raimund), 1902-1994.
Harvard subject headings:
Experience.
Knowledge, Theory of.
Popper, Karl R. (Karl Raimund), 1902-1994.
Princeton subject headings:
Experience.
Popper, Karl R. (Karl Raimund), 1902-1994.