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No.Ref: YY008429 ISSN: BX8937.P78
No.Ref: YY008428 ISSN: BX8969.2.M35
No.Ref: YY008668 ISSN: BX8937.C65
No.Ref: WA101378 ISSN: 90-23330
No.Ref: YY008666 ISSN: BX8937.P58
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No.Ref: YY010801 ISSN: BV3790.H756