- An Introduction to the Thought of Karl Popper by Roberta Corvi, 2007-03-14
- Science and the Open Society : The Future of Karl Popper's Philosophy by Mark Notturno, 2000-04-20
- The Two Fundamental Problems of the Theory of Knowledge by Karl Popper, 2008-11-24
- La logica de la investigacion cientifica/ The Logic of the Scientific Discovery (Spanish Edition) by Karl R. Popper, 2008-06-30
- The Philosophy of Karl Popper by Herbert Keuth, 2004-12-27
- Truth, Hope, and Power: The Thought of Karl Popper by Douglas E. Williams, 1989-01
- Philosophy of Karl Popper: v. 1 (The Library of living philosophers)
- World of Parmenides by Karl Popper, 2001-04
- Die offene Gesellschaft und ihre Feinde 1. Der Zauber Platons. by Karl R. Popper, Hubert Kiesewetter, 2003-07-01
- Karl Popper by Bryan Magee, 1986
- Karl Popper: Philosophy and Problems (Royal Institute of Philosophy Supplements) by Anthony O'Hear, 1996-03-29
- Karl Popper (Arguments of the Philosophers) by Anthony O'Hear, Anthony Oohear, 1982-11
- Learning from Error: Karl Popper's Psychology of Learning by William Berkson, John Wettersten, 1984-10
- Geltung und Gegenstand: Zur Metaphysik im Fruhwerk Karl R. Poppers (Campus Forschung) (German Edition) by Evelyn Grobl-Steinbach, 1983
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