Carl Yaws (Beaumont, TX), Ph.D., is a professor of chemical engineering at the College of Engineering at Lamar University. He has extensive industrial experience in process evaluation, research, development, and design at laboratory, pilot plant, and production levels. He has worked for Exxon, Ethyl, and Texas Instruments. He is author of 25 books: Physical Properties, Thermodynamic and Physical Property Data, Physical Properties of Hydrocarbons (vols. 1, 2, 3, and 4 with RWG), Handbook of Vapor Pressure (vols. 1, 2, 3, and 4), Handbook of Viscosity (vols. 1, 2, 3, and 4), Transport Property Data, Handbook of Thermal Conductivity (vols. 1, 2, 3, and 4), Handbook of Thermodynamic Diagrams (vols. 1, 2, 3, 4), Handbook of Chemical Compound Data for Process Safety, and Chemical Properties Handbook. He holds several patents and has published more than 350 papers in distillation process evaluation, cost engineering, thermodynamic property data and pollution prevention technical process modification. Dr. Yaws is c