Leivo, M. (1995). High early strength concrete. Helsinki University of Technology.
Dyfyniad Arddull ChicagoLeivo, Markku. High Early Strength Concrete. Espoo: Helsinki University of Technology, 1995.
Dyfyniad MLALeivo, Markku. High Early Strength Concrete. Helsinki University of Technology, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.