title: Progress in stereotaxic surgery in Madras. A tribute to Dr. Spiegel on his 80th birthday.
mesh_terms: D001706:Biopsy; D005069:Evaluation Studies as Topic; D049673:History, 20th Century; D049711:History, Modern 1601-; D007194:India; D009493:Neurosurgery / Q000266:history*; D013238:Stereotaxic Techniques / Q000266:history* / Q000295:instrumentation / Q000379:methods