Annop Sompornsoem. 2001. Parameter of fly ash concrete mix design. Department of Civil Engineering, Kasetsart University;
Annop Sompornsoem. (2001) Parameter of fly ash concrete mix design . Kasetsart University/Bangkok.
Annop Sompornsoem. Parameter of fly ash concrete mix design. . Bangkok:Kasetsart University, 2001.
Annop Sompornsoem. (2001) Parameter of fly ash concrete mix design . Kasetsart University/Bangkok.