Lin, Xiao-Feng, Yu-Ping Wu, Guang-Hui Kong, and Xu-Bo Liu. “Toxic and Essential Elements in Different Types of Compost Samples”. Asian Journal of Chemistry 26, no. 10 (May 10, 2014): 3095–3100. Accessed July 17, 2024. https://asianpubs.org/index.php/ajchem/article/view/26_11_64.