Patterns of high school students' explanations of their predictions and observations on sound od Soliven, Samuel R.

Sound advances as medical tool od Lane, Earl

Using sound od Morgan, Sally

Sound and vibration damping with polymers

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An improvised apparatus and suggested activities for teaching sound waves od Rodriguez, Socorro Magallanes 1949-

The meaning of sound od Ronan, Colin A.

Sound and ultrasound waves in air, water and solid bodies. (Zvukovye i ul'trazvukovye volny v vozdukhe, vode i tverdykh telakh) od Krasil'nikov, V. A.