Tfaij, Ali L., Abdul Mehdi S. Al-Ansari, and Meiad M. Al- Jaberi. “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 (November 22, 2019): 193–206. Accessed May 15, 2024. https://www.bjas.bajas.edu.iq/index.php/bjas/article/view/153.