The Air-Conditioning and Refrigeration Institute(Arlington, VA), along with Prentice Hall, has published a new education textbook on air conditioning systems,Air Conditioning Systems: Principles, Equipment and Service.The book is designed to offer students and technicians a complete overview of the concepts underlying air conditioning systems as well as installation, troubleshooting, and repair procedures. For more information, call Prentice Hall at 800-282-0693 and use the reference number ISBN: 0-13-517921-1.