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MiniDVD - Wikipedia
DVD Layers - How DVDs Work | HowStuffWorks
Definition of DVD+R | PCMag
CD Copier, DVD Duplicator, Blu-Ray Duplicator | Vinpower Digital
Difference between Dual-Layer and Double-Sided DVD
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DVD Size: What are Capacities of Different DVD Types?
What are Different DVD Sizes: DVD-5, DVD-10, DVD-9 and DVD-18
PP HP DVD R DL Dual Layer 8X Speed Spindle Cakebox, Memory Size: 8.5GB