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Specially protected natural area «Sources of the Krymza River»: modern state and protection of (Syzransky District, Samara Region) - PDF (Russian)
Copyright (c) 2016 Saksonov S.V., Novikova L.A., Mitroshenkova A.E., Rakov N.S., Senator S.A., Dronin G.V., Golovlev A.A.
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