Conjectures and Refutations: The Growth Of Scientific Knowledge by Karl Popper

Objective Knowledge An Evolutionary Approach By Karl R. Popper Vintage Paperback

Conjectures and Refutations: The Growth Of Scientific Knowledge by Karl Popper

Conjectures of a Guilty Bystander, by Thomas Merton, Vintage PB 1968

Conjectures of a Guilty Bystander by Thomas Merton Spiritual Reflections 1968

The Poverty of Historicism. Karl Popper. Ex-lib 1st edition, 1957. Kegan Paul

Unended Quest An Intellectual Autobiography by Popper, Karl Paperback 1976

1983 Realism and the Aim of Science by Karl R. Popper Paperback Book