. . . . . . . . . . . . . . . . . "Sound and light"@en . "Sound and light" . . "Juvenile works"@en . . . . . . . . . . . . . "1995-2000 State Textbook Adoption - Rowan/Salisbury."@en . . . "Sound and light, [student text]"@en . . . . "Problems and exercises"@en . . . . . . . . . . . . . . . . . . . . "Sound and light : activity book"@en . . "Sound and light. [Activity book]"@en . . .