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发明名称
TRAINING APPLIANCE IN GEOGRAPHY
摘要
申请公布号
SU1667143(A1)
申请公布日期
1991.07.30
申请号
SU19884412871
申请日期
1988.04.20
申请人
UMANSKIJ MOISEJ YA,SU
发明人
UMANSKIJ MOISEJ YA,SU
分类号
G09B27/00
主分类号
G09B27/00
代理机构
代理人
主权项
地址
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