Book Review: Keuth,H. (2005). The Philosophy of Karl Popper. Cambridge,UK: Cambridge University Press

Popper, Karl R. 1959. The logic of scientific discovery. London: Hutchinson.

---. 1965. Conjectures and refutations: The growth of scientific knowledge. 2d ed. London: Routledge and Kegan Paul.

---. 1966. The open society and its enemies. 5th ed. London: Routledge and Kegan Paul.

---. 1972. Objective knowledge: An evolutionary approach. London: Oxford University Press.

---. 1982. The open universe: An argument for indeterminism, edited by W. W. Bartley III. Postscript to the Logic of scientific discovery, 2. Totowa, NJ: Rowman and Littlefield. ---. 1983. Realism and the aim of science, edited by W. W. Bartley III. Postscript to the Logic of scientific discovery, 1. Totowa, NJ: Rowman and Littlefield.

Tarski, Alfred. 1944. The semantic conception of truth and the foundations of semantics. Philosophy and Phenomenological Research 4:341-75.