International Mathematical Olympiad Volume 1: 1959–1975 Hardcover – Illustrated, 5 September 2005

The minus signs have all been misprinted as ⊥. Consequently, vector arrows over two letters are also misprinted. Otherwise good.

I wish the solutions were a bit more elaborate and detailed. Well, you can't expect it to be easy either since, it's from IMOs. Amazon's service was great. They were prompt to respond and I liked their options of delivering it to an Amazon locker instead of home where things can either get lost or people maybe unavailable for pick up. Locker system is the best option. Wish they would expand that service for more and bigger items.

The first of three (so far) collections of problems used in the International Mathematical Olympiad. Specialist fare, no doubt, but excellent nonetheless.