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发明名称
Slow-release of chemical fertilizers in topsoil
摘要
申请公布号
GB9822517(D0)
申请公布日期
1998.12.09
申请号
GB19980022517
申请日期
1998.10.16
申请人
SALEM, MAHMOUD;BANDARA, ASOKA J
发明人
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主分类号
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代理人
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