National Research Council (U.S.). Highway Research Board. (1952). Performance of concrete pavement on granular subbase: Presented at the thirty-first annual meeting, January 1952. Highway Research Board.
Dyfyniad Arddull ChicagoNational Research Council (U.S.). Highway Research Board. Performance of Concrete Pavement on Granular Subbase: Presented at the Thirty-first Annual Meeting, January 1952. Washington: Highway Research Board, 1952.
Dyfyniad MLANational Research Council (U.S.). Highway Research Board. Performance of Concrete Pavement on Granular Subbase: Presented at the Thirty-first Annual Meeting, January 1952. Highway Research Board, 1952.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.