This set of 4 books by Dr. William Johnston focuses on animal anatomy and physiology, making it an excellent resource for those studying veterinary studies. The books cover a wide variety of animals and topics, providing valuable insight for anyone interested in the subject area. Each book is a study guide with a publication year of 2016 and a language of English. The format is a traditional book, and the publisher is Darnley publication group, based in the United States. The set has a unit quantity of 4, and it is perfect for anyone who wants to gain a thorough understanding of animal anatomy and physiology.