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| Sound Waves (Energy in Action (Powerkids Press).)
by Ian F. Mahaney
| | List Price: | $6.33 |  | | Available: | Usually ships in 2 to 3 weeks | | | | | Sales Rank: | 1217771 | | Studio: | PowerKids Press | | | Binding: | Paperback | | Reading Level: | Ages 9-12 | | Number Of Pages: | 24 | | Publication Date: | December 31, 1969 | | Publisher: | PowerKids Press |
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