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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Goldbeck, Albert Theodore, - Jackson, Frank H. (Frank Herbert),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1917
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Concrete  Concrete roads  Expansion and contraction  
  2. By: Voshell, James Theodore, - Toms, Raymond Ezra,
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1922
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Concrete  Concrete roads  Portland cement