From The Backcover of the 1976 Arrow edition
VULCAN 3 - the supreme computer. It was autonomous, self-servicing - and sentient. A machine whose cold, dispassionate logic had freed the world from war and poverty. When Vulcan ignores all questions concerning the Healers - a fanatical group dedicated to Vulcan's destruction - Director Barris becomes suspicious. The world government has been infiltrated - but by whom? Barris investigates, but Vulcan has already devised a solution of its own - and the winged terror of Vulcan's Hammer is unleashed on the world. Hallucinatory science fiction from the author of The Man In The High Castle and Do Androids Dream of Electric Sheep?