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Photonic Crystal Fibers - Properties and Applications (F. Poli, A. Cucinotta, S. Selleri, 2007)




Advanced Keyhole / IMPROVED CRYSTAL / "KH-12"




KH-11 KENNAN / CRYSTAL




The Cambridge Encyclopedia of Language - David Crystal


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Advanced Keyhole / IMPROVED CRYSTAL / "KH-12"


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KH-11 KENNAN / CRYSTAL


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