The Concise Lexicon of the Occult by Gerina Dunwich is a great guide for understanding the topic of occultism. This comprehensive guide is a must-read for any adult who has an interest in body, mind and spirit or general occultism. Published by Citadel Press in 1990, this mass market book is a great resource for understanding the topic of occultism. Although it is only one page, it is a great resource for anyone interested in the subject.