Lira, Raúl Geochemical evolution of granites from the Achala batholith of the Sierras Pampeanas, Argentina - Boulder, CO Geological Society of America 1990 - pp. 67-76 ilus. - Special Paper. Geological Society of America n.241 . Subjects--Topical Terms: GEOQUÍMICAGRANITOSPETROLOGÍAROCAS PLUTONICASTECTÓNICA Subjects--Geographic Terms: ARGENTINASIERRAS PAMPEANAS Universal Decimal Class. No.: 552.3(8+99)/K28|4