In this translation of the Italian second edition, the authors provide a comprehensive account of the current knowledge on antibiotics. They concisely describe how various scientific disciplines are involved in antibiotics research, development, and use. Their work also discusses the industrial and clinical development of new antibiotics, as well as the questions and controversies related to the function of antibiotics in nature. Antibiotics is richly illustrated with clear chemical structures, drawings, diagrams, and synoptical tables.