It might be an older version, as it says "22." Please understand this before purchasing. This SPI problem book is designed for test centers and allows for efficient learning with one topic per day. - Title: 7 Days to Master! SPI [Frequently Appearing] Problem Book - Author: Job Hunting Measures Research Group - Price: 1200 yen - Theme: Test Center Compatible - Learning Style: One topic per day, complete in one week - ISBN: 978-4-471-99027-0 Thank you for viewing.