Robert J. Lauf

• A Collectors Guide to the Garnet Group
• Collector's Guide to the Beryl Group
• Collectors Guide To Quartz And Other Silica Minerals
• Collectors Guide To The Axinite Group
• Fly Ash and Coal Conversion by-Products Vol. 43
• Fly Ash and Coal Conversion by-Products : Characterization, Utilization, and Disposal I
• Microwave Processing of Materials IV