TY - BOOK AU - Grabarchuk,Serhiy AU - Grabarchuk,Peter AU - Grabarchuk,Serhiy TI - The simple book of not-so-simple puzzles SN - 9781568815251 (ebook : PDF) PY - 2008/// CY - Wellesley, Mass. PB - A.K. Peters KW - Puzzles UR - http://marc.crcnetbase.com/isbn/9781568815251 ER -