| Contributors | Dvinsky, Martin M. (author) |
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| Title | Опера не написанная Чайковским |
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| In | Вечерняя красная газета [Leningrad] |
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| Edition | 29 May 1933 |
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| Published | 1933 |
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| Format | Article |
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| Language | Russian |
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| Notes | Includes Letter 51 and Letter 52 from Tchaikovsky to Viktor Olkhovsky concerning the projected opera Hyperbola (1854) |
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