"science fiction" . . "London (England)" . . "Brothers and sisters Juvenile literature." . . "Brothers and sisters." . . "Young adult fiction." . . "Suspense fiction." . . "Twins Juvenile fiction." . . . . "The roar = Kēmkon khonklāiphan" . . "Kēmkon khonklāiphan" . . . . "In an overpopulated world where all signs of nature have been obliterated and a wall has been erected to keep out plague-ridden animals, twelve-year-old Mika refuses to believe that his twin sister was killed after being abducted, and continues to search for her in spite of the dangers he faces in doing so." . . . "El rugido un nuevo futuro está por explotar"@es . "Brølet"@da . "Electronic books"@en . . . . . . "Fiction"@en . "Fiction" . . . . . . . . . "Young adult works" . . . . . . . . . "Twelve-year-old twins Mika and Ellie live in a future behind a wall safe from the plague animals that live beyond, or so they've been told. But when one of them disappears, and the other is caught in a sinister game, they begin to discover that their concrete world is built on lies. Determined to find each other again, they go in search of the truth. Suggested level: intermediate, secondary." . . . "Die goldenen Türme" . . . . . "Science fiction" . . "Roar" . . . "Science fiction"@en . . "Juvenile works" . . "Young adult fiction" . . "The roar" . . "The roar"@en . "El rugido : un nuevo futuro está por explotar" . "Children's stories" . "Children's stories"@en . . . "The Roar"@en . . . . . . . "Clayton, Emma" . . "Mellizas Novela juvenil." . .