This is the classic textbook on angiography by Hugo Krayenbuhl, the father of Swiss Neurosurgery. It has never been improved on even though a later vesion by Peter Huber carried on the torch. The images and the cases are unique. The only problem is the structure which is of its time and has not aged well: each chapter very quickly goes into detailed descritions of pathology after a brief descrition, making reading very hard at times. But it is extremely rewarding since the bibliography is unique as well.