found: Work cat.: 2007334325: Borghetti, N.R.B. Aqüífero Guarani, 2004:p. 25 (Guarani Aquifer is inserted in the Sedimentary Geological Basin Paraná, located in part of Brazil, Paraguay, Uruguay, and Argentina, and constitutes a main groundwater reservoir in South America)
found: Guarni Aquifer System, 2005(Guarni Aquifer System (GAS) is a ground water reservoir, located in the eastern and mid-Southern South America and underlies in [sic] some areas of Argentina, Brazil, Paraguay and Uruguay)
found: International Assoc. of Hydrogeologists WWW Home page, Aug. 1, 2007(Guarni Aquifer; only recently reorganized as one interconnected system, prior to which the aquifer was also known by the names of Botucatu in Brazil, Tacuarembó in Uruguay and Argentina, and Misiones in Paraguay)