Hydrogen in Intermetallics I is the first of two volumesaiming to provide atutorial introduction to the generaltopic of hydrogen in intermetallic compounds and alloys. Inthe present volume, a series of chapters, each written bytwo experts in the field, gives a comprehensive review ofthefollowing areas: -preparation of intermetallics andtheir hydrides on a laboratory and industrial scale; -thermodynamic properties; -crystal and magnetic structure; -electronic properties; - heat of formation models; -magnetism and superconductivity.