You have chosen 'Letters to Jourdain' by Gottlob Frege, 'Morality as system of hypothetical imperatives' by Philippa Foot and 'Elucidation of some points in E.Schrder' by Gottlob Frege
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| A. | Basis of Science | |
| B. | Scientific Theories | |
| C. | Induction | |
| D. | Explanation |