Çetin, İlknur Zeren. “Polllution of Ni and Co: Regional Changes Analyzed Using Topsoil Data – A Case Study of Trabzon”. International Journal of Advanced Natural Sciences and Engineering Researches 8, no. 7 (August 29, 2024): 323–327. Accessed November 23, 2024. https://as-proceeding.com/index.php/ijanser/article/view/2003.