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Medieval sandstones of the Perm region: a collection of articles 1831-1928. [Electronic resource] / comp. TV Kharitonov; Perm. state. nat. Issled. un-t. - Perm, 2016. -
Statement of the compulsory federal copy of electronic publication 1027 / OE.
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Source of the electronic copy: Perm State Research Institute |
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