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다국어입력
1
Smith, Warren J, 569-S663m | McGraw-Hill Book Company | 1990 569-S663m,
2
Smith, T.J., | Warren, Gorham and Lamont | 2011 ,
3
Gary W. Chai, | 한국도로학회(구)한국도로포장공학회 | 2006 ,
4
Smith, Warren Sylvester., 842-S663b | W.W.Norton and Company | 1981 842-S663b,