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Please read BHL's Acknowledgment of Harmful Content
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  1. By: United States. Department of Agriculture. - American Association of State Highway Officials.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1924
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bridges  Bridges, Iron and steel  Contracts and specifications  Design and construction  United States