For this fourth edition, a number of new sections have been written, including many new problems and several datasets. Existing materials have been supplemented with new sections on grammaticalization, tonogenesis, morphological change, and using statistical methods in language classification.
Because of the diversity of the data presented and the completeness displayed in these chapters, this book constitutes an essential tool for linguistics students, and for all readers with a smattering in phonetics ... this updated edition shows that the classic work of T. Crowley remains an essential tool both for its completeness and its simplicity, especially thanks to C. Bowern's addition to this new edition. -- Oscar Garcia-Marchena, Lexis