You have chosen 'Elements of Mathematical Logic' by Jan Lukasiewicz, 'Review of Chihara 'Struct. Accnt of Maths'' by John P. Burgess and 'On the General Idea of Proof Theory' by Dag Prawitz
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| A. | Basis of Science | |
| B. | Scientific Theories | |
| C. | Induction | |
| D. | Explanation |