You have chosen 'works (all lost)' by Aristippus the elder, 'Letters to Jacques Lenfant' by Gottfried Leibniz and 'Presidential Address of Am. Math. Soc' by Oswald Veblen
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| A. | Classical Physics | |
| B. | Modern Physics | |
| C. | Space | |
| D. | Time | |
| E. | Cosmology | |
| F. | Chemistry | |
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