Home›Books›Why Cant I Hear That Pitch And FrequencyWhy Cant I Hear That Pitch And Frequencyby Richard Spilsbury, Louise Spilsbury, HL Studios StaffNo description available.SoundsJuvenile literatureSoundExperimentsJUVENILE NONFICTIONScience & NaturePhysicsSound, juvenile literatureVibrationStudy and teachingActivity programs