You have chosen 'Primitive Thisness and Primitive Identity' by Robert Merrihew Adams, 'Ontology and the Vicious Circle Principle' by Charles Chihara and 'Elements of Set Theory' by Herbert B. Enderton
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| A. | Basis of Science | |
| B. | Scientific Theories | |
| C. | Induction | |
| D. | Explanation |