The Incompleat Enchanter

The Mathematics of Magic - it was the greatest discovery ever. Or so thought Professor Harold Shea. With the proper equations he could instantly transport himself and his friend Reed Chalmers back - or sideways - in time to all the wondrous lands of ancient myth and legend.But slips in time were a hazard. and Shea's magic didn't always work quite as he expected. A dragon spell might yield a hundred dragons - or, even worse, one-tenth of a dragon. And the various imaginary lands he travelled to held countless dangers that even Shea's equations couldn't predict...ONE OF THE GREATEST FANTASY ADVENTURES OF ALL TIME!Pure extraveganza and pure delight! - New York TimesDelightful fantasy - GalaxyA lot of fun: and you never met anything exactly like it in your life - Saturday Review of Literature