Soil protection role of Gorgan forests and its changes under the influence of forest exploitation von V. S. Oliinyk, Yu. Rak

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Peculiarities of spreading of spruce stands drying in Gorgany von Yu. Rak, V. S. Oliinyk

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Historiography navigation in the Azov Sea (the pre-revolutionary and Soviet period) von Yu. Rak, H. Kazakov

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