An encyclopedia that thoroughly explains the structure of muscles and training methods. Purchased for use in class, and now selling as the class is over. There are no noticeable scratches or stains, so I think it won't bother anyone who isn't overly concerned. - Title: Perfect Encyclopedia of How to Use and Train Muscles - ISBN: 978-4-8140-1599-3 - Authors: Sadao Ishimura, Masayuki Suzuki - Contents: Explains the structure and function of muscles, training methods, and how to use muscles in each part of the body. Thank you for looking.