The 19th edition of the Merck Manual is available at many online retailers, including Amazon.com, Barnes and Noble and Wal-Mart. The full name of the Merck Manual is the "Merck Manual of Diagnosis and Therapy" and the 19th edition was published by Merck & Co., Inc. in 2011.
Amazon.com further describes this manual as the world’s most widely used medical reference book. The online retailer reports that the 19th edition of the Merck Manual of Diagnosis and Therapy has been completely updated and expanded from the previous edition with more than 850 new pages, 15 additional chapters and over 300 new tables. Of particular interest in the 19th edition, the publisher Merck & Co., Inc. reports, are expanded discussions and sections covering geriatric medicine. The book contains information about more than 2,000 diseases and disorders, including their causes, symptoms, treatment and prevention.