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International Standard Category: Mining and minerals

YS/T 300-1994    Germanium collection
锗富集物 ;
Category No.:73 Valid Status:abolished
Issued Organization: Issued Date:1987-02-26
Implemented Date:1988-2-1 Abolished Date:2008-09-01
Superseded Standard.:YS/T 300-2008 Germanium concentrates
Superseded Date:2008-9-1
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