There has been data ("One Minute Mental Maths for Ages 7-9: 160 photocopiable tests for practising essential maths skills (Mental Maths in Minutes) - ISBN-13 978-1-4729-5894-5") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Tue Feb 4 19:00:33 2020, so the data displayed here has been removed .