New protein genetic studies in six Amazonian Indian populations - Santos, S. E. B.; Ribeiro-dos-Santos, A K C; Guerreiro, J F; Santos, E J M; Weimer, Tânia de Azevedo; Callegari-Jacques, S M; Mestriner, Moacyr Antonio; Franco, M H L P; Hutz, M H; Salzano, Francisco Mauro (Annals of Human Biology, 1998)