"Secret Seven (Fictitious characters)" . . "Abandoned houses Juvenile fiction." . . "Mystery stories." . . "Literatura juvenil." . . "Abandoned houses." . . "Mystery and detective stories." . . . . "Mystery fiction Juvenile fiction." . . "Novela de aventuras." . . "Secret Seven (Fictitious characters) Juvenile fiction." . . . . . . . . "Detective and mystery stories"@en . . . . . "Tres visques per als Set Secrets!"@ca . . . . "Tres visques per als Set Secrets" . . . "Three cheers, secret seven"@en . "Three cheers, secret seven" . . . . . . . . . . . . . . . . . . . . . . "Tres visques per als set secrets" . "Three cheers, Secret Seven" . "Three cheers, Secret Seven"@en . "Mystery fiction"@en . . . "Adventure stories" . "Adventure stories"@en . . . . . "Romány pro mládež" . "Tajuplný dům" . "Three cheers secret seven" . . "Children's stories" . . . "Children's stories"@en . "When Peter and Jack see a gas-fire alight in one of the rooms of an abandoned house, they realise there is a mystery for the Secret Seven to solve."@en . "Fiction" . "Fiction"@en . . . . . . . . . . . . . . "Tres hurras para los siete secretos" . "Tres hurras para los siete secretos"@es . . "Tres hurras para los Siete Secretos" . "Tres hurras para los Siete Secretos"@es . . "Large type books"@en . . "Enid Blyton's"@en . . . . . "Adventure fiction" . . "Adventure fiction"@en . . "Juvenile works" . "Juvenile works"@en . "Três vivas aos sete" . . . . . "Três vivas aos Sete" . . . . . . . . "The Seven try to discover who is living in an old abandoned house."@en . . . . . "Secret Seven"@en . . "Children's stories, English." . .