Immunotoxin Therapy in Treating Children With Progressive or Recurrent Glioblastoma Multiforme or Anaplastic Astrocytoma [clinicaltrials:NCT00052624]

Immunotoxin Therapy in Treating Children With Progressive or Recurrent Glioblastoma Multiforme or Anaplastic Astrocytoma [clinicaltrials:NCT00052624]