You have chosen 'On Second-Order Logic' by George Boolos, 'Review of Tait 'Provenance of Pure Reason'' by Charles Parsons and 'Primitive Thisness and Primitive Identity' by Robert Merrihew Adams
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| A. | Basis of Science | |
| B. | Scientific Theories | |
| C. | Induction | |
| D. | Explanation |