527,586 HITCHCOCK E.R. /red./ Stereataetic treatment of epilepsy. Symposium under the spansarshlp af the European Society far Stereatactie and Functional Neurasurgery,Bratislava 1975. Ed. toy F.J. Gillingham, E.R.Hitchcack, P. Nadvarnik. Wien 1576 Springer-Verl. 8o s. VI, 281, nlb. 1, il. Acta Neurachirurgica, auppl.