Buy from our bookstore and 25% of the cover price will be given to a school of your choice to buy more books. *15% of eBooks.
Books By Owen O'Shea, Colm Mulcahy - Author
Owen O'Shea is the author of The Call of the Primes and The Magic Numbers of the Professor (with Underwood Dudley) as well as articles in the Journal of Recreational Mathematics and EdgeScience.
