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 (???)  Library
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 (???) ngineering 
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 (DIR) Concrete Construction: Methods and Costs
       By Gillette, Halbert Powers, 1869-; Hill, Charles Shattuck, 1868-
 (DIR) Measuring Tools
       By Unknown
 (DIR) Opportunities in Engineering
       By Horton, Charles M. (Charles Marcus), 1879-
 (DIR) The Mechanical Properties of Wood Including a Discussion of the Fact
       By Record, Samuel J. (Samuel James), 1881-1945