| 41. | In 1811 he graduated as a doctor of medicine and a doctor of philosophy.
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| 42. | He later gained a doctor of philosophy in 1935 at the University of Vienna.
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| 43. | He received Doctor of Philosophy from that university in 1943.
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| 44. | Frolov V . V .-the Doctor of Philosophy, the professor.
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| 45. | He earned his Doctor of Philosophy degree from Queen's University.
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| 46. | He graduated as a doctor of philosophy in 1915.
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| 47. | He was granted his doctor of philosophy in 1926.
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| 48. | He is also a doctor of philosophy and Germanistics.
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| 49. | The first Doctor of Philosophy was awarded in 1952.
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| 50. | Redfern received a Doctor of Philosophy degree in 2001.
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