Production of Proteolytic Enzyme from Catfish Waste Using Bacillus subtilis, Proteus vulgaris, and Arthrobacter aurescens. Fountain Journal of Natural and Applied Sciences [Internet]. 2017 Dec. 29 [cited 2026 Apr. 2];6(2). Available from: http://www.fountainjournals.com/index.php/FUJNAS/article/view/152