TY - SER AU - Sridhar,B.B.M. AU - Han,F.X. AU - Diehl,S.V. AU - Monts,D.L. AU - Su,Y. TI - Effect of Phytoaccumulation of Arsenic and Chromium on Structural and Ultrastructural Changes of Brake Fern (Pteris vittata) KW - SAMAMBAIA KW - ANATOMIA VEGETAL KW - ARSENICO KW - CROMO KW - POLUICAO KW - CORRETIVO UR - http://www.scielo.br/pdf/bjpp/v23n4/a06v23n4.pdf ER -