You have chosen 'Introduction to Russell's Theory of Types' by Willard Quine, 'On the Principles of Indiscernibles' by Gottfried Leibniz and 'Parthood and Identity across Time' by Judith (Jarvis) Thomson
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| A. | Basis of Science | |
| B. | Scientific Theories | |
| C. | Induction | |
| D. | Explanation |