1.
Shnaihej KT, Khaleel SF, Sukkar DKA. Preparation of Nano Silica particles by laboratory from Iraqi sand and added it to concrete to improve hardness specifications. Journal of Petroleum Research and Studies [Internet]. 2019Sep.1 [cited 2022Jul.2];9(3):36-58. Available from: https://jprs.gov.iq/index.php/jprs/article/view/313