Dictionary of Early Christian Beliefs by David Bercot

I have the book but would find a Logos edition much more useful for quick reference. Here's the product description:

Interest in the ways of the early church has never been more intense. What did early Christians believe about the divinity of Christ? What were the beliefs of those who sat at the feet of JesusÂ’ disciples? Now, for the first time, a unique dictionary has been developed to allow easy access to the ancient material and furnish ready answers to these questions and others like them. David W. Bercot has painstakingly combed the writings of these early church leaders and categorized the heart of their thinking into more than 700 theological, moral, and historical topics to create A Dictionary of Early Christian Beliefs. Wonderfully suited for devotional or thematic study as well as sermon illustration, this resource offers a window into the world of the early church and affords a special opportunity to examine topically the thoughts of students of the original apostles, as well as other great lights in the life of the early church.

• Collects relevant comments on key Christian concepts from prominent figures such as Origen, Clement of Alexandria, Clement of Rome, and Hippolytus.
• Includes key biblical verses associated with a given topic.
• Offers brief definitions of unfamiliar terms or concepts, allowing easy access to the ancient material.
• Provides a "Who's Who" of ante-Nicene Christianity to put in context the ancient Christian writers.
• Discusses more than 700 key theological, moral, and historical topics.
• Gives strategic cross-reverences to related topics.
• Functions as a topical index to the writings of the Ante-Nicene Fathers.