. . "Competition (Psychology)" . . "Robots." . . "Sports Corrupt practices Juvenile fiction." . . "Grandfathers Juvenile fiction." . . "Racing." . . "Competition (Psychology) Juvenile fiction." . . "Grandfathers." . . "Arctic regions" . . "Arctic Regions." . "Sports Corrupt practices." . . . . . . . . . . . . . "Electronic books"@en . "Children's stories"@en . . . . . . "Arctic adventure"@en . . . . . . "Fiction"@en . . . . . . "For the third leg of the robot races the contestants must choose between three possible Arctic routes, all of which are dangerous--especially when some of the racers are not playing by the rules."@en . . . . . . "Juvenile works"@en . . "Robots Juvenile fiction." . . "Racing Juvenile fiction." . .