SALAZAR, F. J., J.C. DUMONT, M. A. SANTANA, B. F. PAIN, R. CHADWICK, and E. OWEN. 2003. “A Survey of Dairy Effluent Management in the South of Chile”. Archivos De Medicina Veterinaria 35 (2):215-25. https://doi.org/10.4067/S0301-732X2003000200009.