Evaluation of skin resistance in the Nile Tilapia Oreochromis niloticus as a result of skinning and chromo and bioleather tanning - Souza, Maria Luiza Rodrigues; Viegas, Elisabete Maria Macedo; Casaca, Jorge M.; Faria, Regina H. Sant'Ana de; Dourado, Doroty M.; Ferreira, Isabel C. (World Aquaculture, 2003)