All the health care information you need in one package! Merck returns! The new 18th Edition of The Merck Manual is packed with essential information on diagnosing and treating medical disorders to help deliver the best patient care. The world's most widely used and oldest continually published medical reference now features expanded clinical focus on each disorder, as well as more specific guidance on patient examinations. This handy, compact textbook was written by more than 300 expert clinicians for everyday use. Designed for maximum clinical usefulness, the new Merck Manual makes it easy to find the right information, right when you need it.