Ismail, N. and Abdul Jabar, N.A. 2012. Extraction of Collagen from Catfish (Clarias gariepnus) Waste and Determination of its Physico-chemical Properties. Scientific Research Journal. 9, 1 (Jun. 2012), 29–42. DOI:https://doi.org/10.24191/srj.v9i1.9413.