Al Dabbas, M., Y. Eisa, M., & H. Kadhim, W. (2025). Estimation of Gypsum- Calcite Percentages Using a Fourier Transform Infrared Spectrophotometer (FTIR), in Alexandria Gypsiferous Soil -Iraq. Iraqi Journal of Science, 55(4hB), 1916-1926. https://doi.org/10.24996/ijs.2014.55.4B.%g