The Flying Sorcerers – David Gerrold & Larry Niven

Shoogar is the greatest wizard his primitive village has ever known. Then a strange new wizard literally drops from the sky. Of course, they new wizard comes from a very advanced culture. Mayhem ensues.

There is a lot of humor in this book as magic meets technology. There are also many more or less good puns. I enjoyed it but it is far from a must read. The joke gets a bit old.