You have chosen 'From an Ontological Point of View' by John Heil, 'Philosophy of Natural Science' by Carl Hempel and 'True in Theory, but not in Practice' by Immanuel Kant
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| A. | Justification Problems | |
| B. | Internal Justification | |
| C. | External Justification | |
| D. | Scepticism | |
| E. | Relativism |