Encyclopædia Britannica. Retrieved January 18, 2010, from Encyclopædia Britannica Online: http://www.britannica.com/EBchecked/topic/460371/Pilcomayo-River W. H. Strosnider, F. Llanos, R.W. Nairn: LEGACY OF NEARLY 500 YEARS OF MINING IN POTOSÍ, BOLIVIA: STREAM WATER QUALITY (pdf) - conference paper at the 2008 National Meeting of the American Society of Mining and Reclamation. New Opportunities to Apply Our Science, June 14–19, Richmond, VA. Rivers of Paraguay Rivers of Argentina Rivers of Formosa Province Argentina–Paraguay border Argentina–Bolivia border International rivers of South America Rivers of Chuquisaca Department Rivers of Oruro Department Rivers of Potosí Department Rivers of Tarija Department Rivers of Salta Province Tributaries of the Paraguay River Border rivers Ramsar sites in Argentina