“Estimating Compressive Strength of Concrete Using Multiple Regressions Based on Principal Component Analysis”. Ianna Journal of Interdisciplinary Studies,ISSN(O):2735-9891,ISSN(P):2735-9883, vol. 5, no. 1, Mar. 2024, pp. 111-24, https://doi.org/10.84761/d5x17721.