葛瑞拉 ((Gralla, Preston))

行動通訊概論 by: 王明輝; 葛瑞拉 ((Gralla, Preston)); Gralla, Preston (Language materials, printed) , [原著]

環保與生態 by: 葛瑞拉 ((Gralla, Preston)); Plumlee, Cherie; Gralla, Preston; 普魯李 ((Plumlee, Cherie)); 周顯光 (Language materials, printed) , [編著]

行動通訊概論 by: Gralla, Preston; 葛瑞拉 ((Gralla, Preston)); 王明輝 (Language materials, printed) , [原著]