[1]
E. C. Hack, P. M. F. da C. Saturnino, C. C. Meinerz, H. Nacke, L. Assi, and A. C. Gonçalves Jr., “Generation of waste from swine in the western Region of Parana: a case of unsustainability”, Rev. Sci. Agr. Paranaensis, vol. 10, no. 2, p. p.21, Jan. 2000.