This is Popular Science Magazine Vol 280 No 2 February 2012 

Features: Oral History of Extreme Sports, Zero Gravity Roller Coaster, Game of Life, Engineering the Ultimate Toy, drivable arcade cabinet, retro video games on mobile devices, dangers of tin soldiers, sledding without climbing hills, build a giant operation game

If you are purchasing more than one please request a combined invoice

no markings some shelf wear spine good binding good