UNITED-STATES PATENT CLASSIFICATION-SYSTEM

被引：4

|

作者：

DOOD, KJ

机构：

来源：

IEEE TRANSACTIONS ON PROFESSIONAL COMMUNICATION | 1979年 / 22卷 / 02期

关键词：

D O I：

10.1109/TPC.1979.6500289

中图分类号：

G2 [信息与知识传播];

学科分类号：

05 ; 0503 ;

摘要：

引用

收藏

页码：95 / 100

页数：6

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