. Portland cement concrete pavements for country roads. Fig. 1.—Covering the Surface with a Layer of Earth After Canvas is Fig. 2.—After Nearly Two Years CONCRETE ROAD, CHEVY CHASE, MD. Bui 249, U. S. Dept of Agriculture. Plate V. 0Au ? ; lii -!????; / fc||^ ? EbU^^^H Fig. 1 .—Bituminous Wearing Surface in Fair Condition After About One Years Service.

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Keywords: ., bookcentury1900, bookdecade1910, bookidportlandceme, bookyear1915