HEA|  |01428nam0 2200313   45  
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005|  |1920010810163320
010|  |□d￥1.15
091|  |□aCN□bK15045.总2475-市341
100|  |□a20010810d1981    em y0chiy0121    ea
101|0 |□achi
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105|  |□ay   z   000yy
106|  |□ar
200|10|□a电话交换原理□Adian hua jiao huan y-
   |  |uan li□f安徽省邮电学校编
210|  |□a北京□c人民邮电出版社□d1981
215|  |□a455页□d19cm
300|  |□a邮电中等专业学校试用教材
606|  |□a电话交换□x理论
690|  |□aTN916.4□v3　
711|02|□a安徽省邮电学校□Aan hui sheng you di-
   |  |an xue xiao□4编
801| 0|□aCN□b上海图书馆
801| 2|□aCN□bNLC
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