A good basic reference for individuals initially investigating the topic. Not great, but good.

It is a good book that has lots of references in it. Very well rounded with a variety of subjects and provides ad adequate insight in religions, traditions, culture and various societies.
Although, it should be much longer to fit everything in, which would be hard to read as the amount of grammatical errors it is really annoying (even for someone who does not speak English as their first language)
Other than this I believe it is a good reference book for someone who wants to start somewhere and do their own research. It also has very nice pictures in it that keeps you going. There is nothing new though that doesn't exist in other books.

A comprehensive Encyclopedia of various religions and the magic within them.