545,344 SPIEGEL ERNEST A. Guided brain operations : methodoloeical and clinical developments in stereotactic surgery, contributions to the physiology of subcortical Structures / Ernest A. Spiegel. ; with a contribution by Philip L. Gildenberg. — Basel [etc.] : S. Karger, 1982. -VII, [3], 246 s. ; il. ; 24 cm ISBN 3-8055-3451-5