Water leaks out from a 5-centimeter crack in the concrete wing wall of the Gumi Weir on the Nakdong River, part of the Four Major Rivers Restoration Project (Courtesy of Prof. Park Chang-geun)
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Water leaks out from a 5-centimeter crack in the concrete wing wall of the Gumi Weir on the Nakdong River, part of the Four Major Rivers Restoration Project (Courtesy of Prof. Park Chang-geun)
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