Gravity and magnetic investigation of the Vale do Ribeira alkaline intrusives: Jacupiranga, Juquiá and Pariquera-Açu (SP), Brazil. [em CD-ROM] - Rosales, M. T. J.; Shukowsky, Wladimir; Mantovani, Marta Silvia Maria; Slavec, G. B.; Rugenski, André; Leite, E. M. (International Geological Congress, 2000)