TY - BOOK TI - Mathemagic : : 169 astonishing numerical challenges SN - 978-1-4027-8808-6 U1 - 793.74 M426 2010 PY - 2010/// CY - New York : PB - Sterling Publishing Co., Inc., KW - Mathematical - Recreations KW - Mathematical - REcreations - Juvenile literature ER -