The Art of Problem Solving, Volume 2: And Beyond Solutions Manual,7th Edition
The Art of Problem Solving, Volume 2: And Beyond Solutions Manual,7th EditionAuthor(s): Richard Rusczyk, Sandor Lehoczky
Richard Rusczyk, Sandor Lehoczky - The Art of Problem Solving, Volume 2_ And Beyond Solutions Manual. 2-AoPS Incorporated (2006)