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다국어입력
1
Karanam U.M.Rao, Choon Sunwoo, So Keul Chung, Sun, | 한국암반공학회 | 2003 ,
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3
Byung-Gul Lee,In-Joon Kang,Thomas M Lillesand, | 대한토목학회 | 2003 ,
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US Department of Education [, ]
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4
Springer - Verlag New York, Inc. [, ]