Putra, H. and Yudhistira, I. 2022. Improvement of the California Bearing Ratio of Peat Soil Using Soybean Crude Urease Calcite Precipitation. Civil Engineering Journal. 8, 11 (Nov. 2022), 2411–2423. DOI:https://doi.org/10.28991/CEJ-2022-08-11-04.