This excellent book is the first comprehensive treatise on leukemia published in the past 20 years. It covers the entire field in detail and with a comprehensive bibliography, with chapters on etiology, classification, prevalence, symptoms, special features, prognosis, and treatment. The strongest parts of the book are the sections on the clinical aspects of the disease, which are discussed in detail with emphasis on the great variability of the diseases; their differences at various stages; their complications, both common and unusual; and the problems of diagnosis and differential diagnosis, which often offer difficulties. The fact that the findings in leukemia are not static but endlessly changing, offering a constant diagnostic and therapeutic challenge, is stressed. The chapter on treatment is comprehensive. Not only are general indications and contraindications for the various agents given but detailed discussion accompanies the explanation of the use, method of administration, and limitations of each therapeutic