A reference book containing detailed explanations of units and symbols. It's a fun read, with trivia about units and symbols presented alongside examples from everyday life. - Title: Encyclopedia of Unit and Symbol Trivia - Author: Satoshi Shiratori - Publisher: Nihon Jitsugyo Publishing - Price: 980 yen - ISBN: ISBN978-4-534-01148-2 Thank you for looking. This is a used item that has been stored at home for a long time. There are stains, age-related yellowing, and spots. Two pages open completely. There may be oversights. Please consider this if you understand.