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发明名称
EDUCATIONAL APPLIANCE ON GEOGRAPHY
摘要
申请公布号
SU629550(A1)
申请公布日期
1978.10.25
申请号
SU19752303626
申请日期
1975.12.24
申请人
GONCHAR ANATOLIJ T,SU
发明人
GONCHAR ANATOLIJ T,SU
分类号
G09B27/08;(IPC1-7):G09B27/08
主分类号
G09B27/08
代理机构
代理人
主权项
地址
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