Statistical Study of Extract Keratin Protein from Waste Chicken Feather Based on Response Surface Methodology. SJFSSU [انترنت]. 27 أكتوبر، 2022 [وثق 7 ديسمبر، 2025];2(2):12-8. موجود في: https://elc2.su.edu.ly/index.php/jsfsu/article/view/76