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ARRANGEMENT FOR PROTECTING RIVER ROCK BANKS FROM EROSION
ARRANGEMENT FOR PROTECTING RIVER ROCK BANKS FROM EROSION
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机译:保护河岩库免受侵蚀的装置
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摘要
the invention относитс to the area for construction. the purpose of изобретени - cost reduction материаль - ны.х and labour resources. the device дл protection of the river from bleeding представл
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