Some crystals have been available for over 50 years, while others are newly applicable to such industries as medical imaging, infrared imaging, telecommunications and information technology, producing profits in the millions if not the billions of dollars. Topics of the 17 papers on this very important discipline include silicon, the growth of gallium arsenide, computer modeling, indium phosphide, InSb and related ternary alloys, GaN substrates grown under pressure, CMT, sapphires, fluorides, quartz, diamond, silicon carbide and growth under minigravity conditions.