机读格式显示(MARC)
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- 210 __ |a 北京 |c 人民邮电出版社 |d 1979
- 711 02 |a 邮电函授教材编写组 |4 编 |9 youdianhanshoujiaocaibianxiezu
- 801 _0 |a CN |b 261060 |c 20080702
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