Dell, Pamela Sounds / Pamela Dell - New Delhi : Encyclopaedia Britannica, c2012. - 34 p. : ill. ; 22 cm. - Britannica early discovery . ISBN: 9788181312563 LCCN: Subjects--Topical Terms: SoundJuvenile literatureSound LC Class. No.: QC225.5 / .D35 2012