Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 / Federal Investigations of Mine Accidents, Structural / Materials and Fuels. Paper No. 1171
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Herbert M. Wilson ÀúÀÚ°¡ ÁýÇÊÇÑ µî·ÏµÈ ÄÁÅÙÃ÷°¡ ¾ø½À´Ï´Ù.
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