"...this book...is a detailed account of current thinking on virus evolution... Because of the diversity of subjects, this book gives an up to date picture of research in various fields of virology, and helps to tease out connections between these fields. The subjects covered are essential reading for virologists but also have direct relevance for molecular biologists, and indeed any researchers with interests in early evolution... This publication is highly recommended for its breadth of coverage and detailed treatments of the various subjects" -TODAY'S LIFE SCIENCE (February 2001)