Book "Pneumonia: Care and Prevention" by John Hancock Mutual Life Insurance Company. Life Conservation Service is a guide created to popularize knowledge about the disease pneumonia, its symptoms, methods of treatment and methods of prevention. The authors offer the reader comprehensive information about this disease, simplifying complex medical terms and providing practical advice on maintaining lung health. This book will be a useful source of information for both medical professionals and the general public who want to learn more about this disease and ways to prevent it.