The DEWALT HVAC/R Professional Reference Master Edition is a comprehensive textbook designed for adult education and further education in the HVAC industry. Authored by Paul Rosenberg and American Contractors Educational Services, this book covers a wide range of subjects related to heating, ventilation, and air conditioning. With 768 pages, this textbook is packed with valuable information for professionals and students looking to enhance their skills in the field. Published by Cengage Learning in 2006, this book is a must-have for anyone interested in expanding their knowledge in the technical and manufacturing industries.