For citations:

Mirzamuratova R.Sh., Kaldybayev R.T., Bayramoğlu E.E. The effect of walnut shell (juglans regia) on colour fastness of leather. The Journal of Almaty Technological University. 2024;143(1):223-230. (In Kazakh) https://doi.org/10.48184/2304-568X-2024-1-223-230