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METHOD OF PREVENTING FLOODINGS OF UNDERMINED SURFACES AREA WITH SUBSOIL AND SURFACE WATER
METHOD OF PREVENTING FLOODINGS OF UNDERMINED SURFACES AREA WITH SUBSOIL AND SURFACE WATER
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机译:用地下土壤和地表水防止被淹表面面积的方法
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the invention относитс to mountain industrial - ste. purpose изобретени вл етс cost reduction on the drainage work in the development of suite of reservoirs (p). the station of the earth work mult
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