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发明名称
METHOD FOR CONSTRUCTION OF CLOSED HORIZONTAL DRAINAGE IN IRRIGATED FIELD
摘要
申请公布号
SU1678966(A1)
申请公布日期
1991.09.23
申请号
SU19884604112
申请日期
1988.11.10
申请人
VNII GIDROTEKH MELIORAT
发明人
NIKOLODYSHEV IVAN S,SU;SHREJDER VLADIMIR A,SU
分类号
E02B11/00
主分类号
E02B11/00
代理机构
代理人
主权项
地址
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