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501
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502
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503
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504
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505
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506
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507
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508
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509
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510
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511
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512Published 1956“…Акад. Наук.Латвийский ССР…”
Book -
513
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514Published 1956“…Акад. Пед. наук РСФСР…”
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515
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516
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517
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518Published 1953“…Изд.акад.наук СССР…”
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519
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520