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Перфильев М.Н. - Критика буржуазных теорий о советской политической системе - 1968.djvu
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Перфильев А.С.-Особенности тектоники севера Урала-1968.pdf
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Кожевников С.Н., Перфильев П.Д. - Карданные передачи - 1978.djvu
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