Reuben, Gabriel H.
What is sound / Gabriel H. Reuben ; pictures-George Boer. - Chicago : Benefic Press, c 1960. - 46 p. : ill. ; 20 cm. - The What is it series. .
300 300
Sound--Study and teaching (Elementary).
534 / R317w
What is sound / Gabriel H. Reuben ; pictures-George Boer. - Chicago : Benefic Press, c 1960. - 46 p. : ill. ; 20 cm. - The What is it series. .
300 300
Sound--Study and teaching (Elementary).
534 / R317w