Abola, Anda, Maris Strazds, Zanda Gavare, and Rita Veilande. “ASSESSING MERCURY POLLUTION USING BLACK STORK EGGSHELLS”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 16, 2021): 12–16. Accessed December 22, 2024. https://journals23.rta.lv/index.php/ETR/article/view/6528.