You have chosen 'Set Theory and related topics (2nd ed)' by Seymour Lipschutz, 'Notes on John Wilkins' by Gottfried Leibniz and 'Remarks on the forces of inorganic Nature' by J.R. Mayer
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| A. | Basis of Science | |
| B. | Scientific Theories | |
| C. | Induction | |
| D. | Explanation |