TI - Electron optical studies of kaolins and ball clays resed in whitewares PY - 1999 AU - Toledo, S. P. AU - Souza Santos, Helena AU - Santos, PĂ©rsio de Souza T2 - Congress of the Brazilian Society for Microscopy and Microanalysis J2 - Acta Microscopica SN - 0798-4545 PP - Rio de Janeiro VL - 8 SP - 49-50 ER -