Most Popular Books
- Mind and Cosmos CB (CPS publications in philosophy of science)
- The Struggle for Madrid; The Central Epic of the Spanish Conflict, 1936- 1937;
- Spain: the glory and tragedy (AIMS historical series no. 7)
- The nature & function of scientific theories: Essays in contemporary science and philosophy (Series in the philosophy of science / University of Pittsburgh)
- Logic, Laws, and Life: Some Philosophical Complications
