"Cymen." . . "Sonido al alcance de tus manos"@es . . "Make it work! sound"@en . . "Sound" . . . . . . . . . . . . . "El sonido"@es . . "El sonido" . . . . . . "L'acoustique" . . "Des conseils pour construire un modèle simple de téléphone, comprendre le mécanisme de l'oreille humaine..." . . . . . "Experimenta con el sonido"@es . "Experimenta con el sonido" . . . . . "Experiments and activities explore the world of sound. Suggested level: primary, intermediate."@en . . . "Simple experiments to illustrate the science of sound." . . . . . . . . . . . . . . . . . . . . . . . . . . "World book encyclopedia presents sound" . . "Make It Work: Sound" . "Experimenta con el sonido" . . . "Experiment and activities explore the world of sound." . . . "Experiments and activities explore the world of sound." . . . . . "Geluid" . "El Sonido" . . "Juvenile works"@en . "Juvenile works" . . "Introduces basic facts about sound, how it is produced, transmitted, and received with instructions for related experiments and projects."@en . "Sound" . "Sound"@en . "Introduces basic facts about sound, how it is produced, transmitted, and received with instructions for related experiments and projects." . . . . . "Sounds"@en . . . . "Sain" . "Make it work! Sound" . . "Sonido" . . . "A experimentar!" . "Son Expériences." . . "Son." . . "Sonido Libros infantiles." . . "So Problemes, exercicis, etc. Llibres per a infants." . . "So Problemes, exercicis, etc." . . "Experiments." . . "Acoustique Ouvrages pour la jeunesse." . . "Sonido Experimentos." . . "SONIDO LITERATURA JUVENIL." . . "Sonido Literatura juvenil." . "Experimentos Literatura juvenil." . . "Sonido Obras de divulgación." . . "Sound." . . "Son Expériences Ouvrages pour la jeunesse." . . "Experimentos." . . "Ciencia Experimentos Literatura juvenil." . . "SONIDO EXPERIMENTOS LITERATURA JUVENIL." . . "Sonido Experimentos Literatura juvenil." . . . "Sonido - Obras para la juventud." . . "Son Ouvrages pour la jeunesse." . .