00632nam a2200169Ia 4500 CTU_97801 210402s9999 xx 000 0 und d 621.382 G562 Global competitiveness of U. S. advanced - technology industries : Cellu;ar communications Washington U. S. International Trade Commission 1993 Digital electronics,Electronic engineering,Information storage and retrieval systems,Telecommunication systems,Mobile communication systems Trúc Trung tâm Học liệu Trường Đại học Cần Thơ