"Conduct of life Fiction." . . "Adventure stories." . . "General fiction (Children's/YA) (Children's)" . . . . . . . . "Fiction"@en . "Fiction" . . . . . . . "Alfred Kropp the thirteenth skull"@en . . "There are some things deep within the belly of the earth that should never be disturbed. Which is exactly why Alfred wants to stay at home. When a vision foretells a cataclysmic battle between the 'Sons of Light' and the 'Sons of Darkness', Alfred is called into action." . . . . "Teen misfit Alfred Kropp, the last descendant of Sir Lancelot, is once again in danger as he tries to uncover who is behind a top secret project called SOFIA, while eluding a new enemy who seems determined to kill him." . "Thirteenth skull"@en . "Teen misfit Alfred Kropp, the last descendant of Sir Lancelot, is once again in danger as he tries to uncover who is behind a top secret project called SOFIA, while eluding a new enemy who seems determined to kill him."@en . "Juvenile works" . "Juvenile works"@en . . . . . . . . . "Alfred Kropp og det trettende kranie"@da . . . . "Young adult fiction" . . "Young adult works"@en . . "Electronic books"@en . . . . . . . . . . "Alfred Kropp : the thirteenth skull"@en . "Alfred Kropp : the thirteenth skull" . . . . "Alfred Kropp, the thirteenth skull" . . . . "Knights and knighthood." . . "Orphans." . . "Knights and knighthood Fiction." . . "Conduct of life." . . "Orphans Fiction." . . . . "Antiquities Fiction." . . "Antiquities." . .