Spanish puzzle book for adults - Sopa de letras en español Gymnastics for the brain The brain is the most important muscle. Exercise it. Boost your memory: Wor

A page-turning novel that is also an exploration of the great philosophical concepts of Western thought, Jostein Gaarder's Sophie's World has fired the imaginat

Accessible but rigorous, this outstanding text encompasses all of the topics covered by a typical course in elementary abstract algebra. Its easy-to-read treatm

"A collection of 400 witty or humorous quotations along with their authors' names...have been enciphered into simple substitution ciphers with retained word div

A travel-friendly puzzle-packed book that keeps the brain in shape One of the best ways to exercise the mind is through word and logic games like word searches