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Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 5, pp. 51–53, May, 1977.
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Kharin, A.I. Soil classification according to difficulty of excavation with floating suction dredges. Hydrotechnical Construction 11, 523–527 (1977). https://doi.org/10.1007/BF02403606
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DOI: https://doi.org/10.1007/BF02403606