Cornforth, Maurice Campbell, The open philosophy and the open society: a reply to Dr. Karl Popper's refutations of Marxism / by Maurice Cornforth. - London : Lawrence and Wishart, 1968. - 396 p. ; 23 cm. Subjects--Personal Names: Popper, Karl Raimund, Sir, 1902- Subjects--Topical Terms: Socialism.Dialectical materialism.