This book discusses the experimental and clinical aspects of antibiotic therapy and certain phases of the use of antibiotics in livestock. Both new and well-established antibiotics are described. Most of the papers are appropriately annotated. The editors have been painstaking in their efforts to insure accuracy of the text and of the detailed tabulations of technical data included in many of the papers. Subject and author indexes are provided at the end. The book will be highly useful as a reference for all workers in the field of antibiotics.