ISBN 1510746811 books & textbook
Mensa® AARP® Challenging Brain Twisters: 100 Logic and Number Puzzles (Mensa® Brilliant Brain Workouts)
Coughlin, Fred Mensa, American AARP
Skyhorse /2019-09-17 Paperback / 136 Pages
isbn-10: 1510746811 / isbn-13: 9781510746817