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  _____    __   __   __   _     ______   _____    
 / ____||  \ \\/ // | || | ||  /_   _// |  __ \\  
/ //---`'   \ ` //  | '--' ||   -| ||-  | |  \ || 
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  `----`     `-`'   `-`  `-`   `-----`   -----`

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Text this: Formation of NaNbO3 crystals in dielectric glass and glass-ceramics of a Na2O-Nb2O5-AI 2O3-SiO2 system