Materials, 7. A. S. f. T. a. Air-entraining admixtures for concrete.
Dyfyniad Arddull ChicagoMaterials, 7744 American Society for Testing and. Air-entraining Admixtures for Concrete.
Dyfyniad MLAMaterials, 7744 American Society for Testing and. Air-entraining Admixtures for Concrete.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.