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Dyfyniad Arddull ChicagoNational Research Council (U.S.). Transportation Research Board. Joint-related Distress in PCC Pavement: Cause, Prevention, and Rehabilitation. Washington, D.C: Transportation Research Board, National Research Council, 1979.
Dyfyniad MLANational Research Council (U.S.). Transportation Research Board. Joint-related Distress in PCC Pavement: Cause, Prevention, and Rehabilitation. Transportation Research Board, National Research Council, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.