Kassem, S.T. and El-Shemy, K.A. (2023) “Extracting chromium-free protein hydrolysate from leather tanning wastes”, International Journal of Environment, Agriculture and Biotechnology, 8(6). Available at: https://i.agriculturejournals.org/index.php/ijeab/article/view/89 (Accessed: 7 July 2024).