Work injuries among middle and high school students in two rural areas of Sao Paulo State, Brazil - Fischer, Frida Marina; Teixeira, L. R.; Latorre, Maria do Rosário Dias de Oliveira; Oliveira, D. S; Cooper, S. P; Martins, Ignez Salas; Costa, L. A. R; Marinho, S. P; Perestrelo, J. P. P (International Symposium on Youth and Work, 2002)