The World Atlas of Language Structures is a book and CD combination displaying the structural properties of the world's languages. Its 142 world maps and numerous regional maps are all in full colour. Each world map shows an average of 400 languages and is accompanied by a fully referenced description. The CD provides an interactive version of the database which allows the user to customize the maps and find and test correlations. The Atlas is anindispensable source of information for linguists, anthropologists, and geographers. It will be especially valuable for typologists, grammatical theorists, historical linguists, and those interested in a particular region. It sets new standards in comparative linguistics. No institution involved in language research canafford to be without it.