sound Discovery Channel School creator text xx Discovery Communications, Inc c2004 19uu monographic eng

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Library has: v.1-Chemistry ; v.2-Electricity ; v.3-Elements ; v.4-Forces & Gravity ; v.5-Heat ; v.6-Light ; v.7-Magnetism ; v.8-Nuclear energy ; v.9-Sound ; v.10-States of matter. "With Physical Science Collections CD-Roms : complete teacher's guide". 6-12 Sound CDR 530 OR #09 050624 20140414093839.0