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International Standard Category: Oxides

GB/T 13558-1992    Dysprosium oxide
氧化镝 ;
Category No.:71.060.20 Valid Status:abolished
Issued Organization:CSBTS Issued Date:1992-07-09
Implemented Date:1993-4-1 Abolished Date:2008-09-01
Superseded Standard.:GB/T 13558-2008 Dysprosium oxide
Superseded Date:2008-9-1
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