단행본
Ralph's World Rocks!
- 개인저자
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Covert, RalphHarper, Charise Mericle
- 서명/저자사항
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Ralph's World Rocks! /by Ralph Covert ;illustrations by Charise Mericle Harper
- 발행사항
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New York :Henry Holt & Co,2008
- 형태사항
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37 p. :col. ill ;29 cm CD-ROM 1매
- 일반주기
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"Includes a CD featuring 3 songs and guitar chords for all 12 songs in the book!"--Cover
- 비통어주제어
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RALPH, WORLD, ROCKS,