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JPS6170927A
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Artificial soil material using seed spraying surface greening method
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JPS60220211A
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Plug built-in type female screw anchor and its production
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JPS59154298A
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Method of executing concrete lining to whole section of tunnel and formwork for execution of said method
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JPS59498A
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Application of concrete to all cross area of tunnel
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JPS58199998A
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Covering of arch concrete of tunnel
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JPS58199997A
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Construction of false support of tunnel
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JPS5824099A
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Covering of total cross are of tunnel with concrete
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JPS57178099A
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Covering and applying of total cross area of tunnel with concrete
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JPS57112600A
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Entire section concrete lined construction of tunnel
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JPS5652298A
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Side wall concrete covering method for tunnels
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JPS55159021A
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Construction method for sloped surface protection
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JPS55148894A
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Method of excavating tunnel and lockup anchor
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