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91ÊÓÆµ Dictionary: Subgrade

By: 91ÊÓÆµ Staff//April 5, 2010//

91ÊÓÆµ Dictionary: Subgrade

91ÊÓÆµ Staff//April 5, 2010//

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subgrade: native material beneath a road, sidewalk, railway, track or other constructed path



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