| The Theory of Moral Sentiments; or, An Essay towards an Analysis of the Principles by which Men Naturally Judge Concerning the Conduct and Character… (with A Dissertation on the Origin of Languages) Adam Smith, LL.D. / Used - Hardcover | | $1,225.00 |
| A System of Logic, Ratiocinative and Inductive: Being a Connected View of the Principles of Evidence and the Methods of Scientific Investigation Mill, John Stuart / Used - Hardcover | | $450.00 |
| A System of Logic, Ratiocinative and Inductive Mill, John Stuart / Used - Hardcover | | $130.00 |
| Conjectures and Refutations: The Growth of Scientific Knowledge Karl R. Popper / Used - Hardcover | 1st Edition | $95.00 |
| Logic, Semantics, Metamathematics: Papers from 1923 to 1938 Tarski, Alfred;Woodger, J. H., translator / Used - Hardcover | 1st Edition | $75.00 |
| The Logic of Scientific Discovery Popper, Karl R. / Used - Hardcover | | $65.00 |
| Principles of Gestalt Psychology Koffka, Kurt / Used - Hardcover | 1st Edition | $65.00 |
| The Controversy on the Comets of 1618 Galileo Galilei, Horatio Grassi, Mario Guiducci, Johann Kepler;Translated by Stillman Drake and C. D. O'Malley / Used - Hardcover | 1st Edition Dust Jacket | $60.00 |