Tfaij, A. L. ., Al-Ansari , A. M. S., & Al- Jaberi, M. M. . (2019). Activity and Thermodynamic Parameters of Urease Enzymes in Soils Treated with Some Heavy Metals Under Different Temperatures and Moisture Levels. Basrah Journal of Agricultural Sciences, 32, 193–206. https://doi.org/10.37077/25200860.2019.268