Al Dabbas, Moutaz, et al. “Estimation of Gypsum- Calcite Percentages Using a Fourier Transform Infrared Spectrophotometer (FTIR), in Alexandria Gypsiferous Soil -Iraq”. Iraqi Journal of Science, vol. 55, no. 4hB, May 2025, pp. 1916-2, https://doi.org/10.24996/ijs.2014.55.4B.%g.