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Compact disc - Wikipedia
Compact disc (CD) | Definition & Facts | Britannica
History of the CD: 40 years of the compact disc - BBC
When Were CDs Invented, and How Do They Work? | HowStuffWorks
Compact Disc Digital Audio - Wikipedia
Compact Disc Explained – Everything You Need To Know
What is compact disc (CD)? | Definition from TechTarget
What is compact disc (CD)? Definition, Types and More
CD Definition - What is a CD (Compact Disc)? - TechTerms.com
How Does A Compact Disc (Or DVD) Work? - Science ABC
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