| Roerich Н. Letters of Helena Roerich, 1929-1938. Vol. 1 [Текст]. - New York: Agni yoga soc., 1954 - XXIX, 508 с.; 24 см
| Roerich Н. Letters of Helena Roerich, 1929-1938. Vol. 1 [Текст]. - New York: Agni yoga soc., 1954 - XXIX, 508 с.; 24 см
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| РГБ (1)
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| 2012
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| Letters of Helena Roerich 1929-1938
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| Intern. centre of the Roerichs
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| Moscow
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| Roerich Н. Letters of Helena Roerich, 1929-1938 [Текст]/ [transl. by V. L. Dutko].- Moscow: Intern. centre of the Roerichs, cop. 2012.-Вых. дан. ориг.: New York: Agni yoga soc., 1954
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|- valign=top
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| 2012
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| Letters of Helena Roerich 1929-1938
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| Intern. centre of the Roerichs
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| Moscow
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+
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| Roerich Н. Letters of Helena Roerich, 1935-1939 [Текст]/ [transl. by V. L. Dutko].- Moscow: Intern. centre of the Roerichs, cop. 2012.-Вых. дан. ориг.: New York: Agni yoga soc., 1954