Used paperback copy of Acid-Base, Fluids, and Electrolytes Made Ridiculously Simple 3rd Edition by Richard A. Preston M.D. ISBN-13 9781935660293 ISBN-10 1935660292 Very Good condition with crisp clean pages; tight, unbroken binding; no smells, light wear to cover. I do note some wrinkling in the top corner to the first couple pages, shown in the second photo - it resembles water damages but appears to be a factory issue as it is limited to only those two and does not affect the cover. Looks like it happened during the binding process. Ships in a padded envelope via USPS Media Mail - or upgrade to Priority if you need it in a hurry. Whenever possible, I ship same or next day, so that you can receive your item as quickly as possible.