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Frankfurt am Main: Repair work telephone system

On 2 May, the Frankfurt site of the German National Library will be unavailable by telephone from 9.30 - 11.30 due to repair work.

DDC Bühne

Overview of the ten main classes of the Dewey Decimal Classification in the printed edition of the DDC Overview of the ten main classes of the Dewey Decimal Classification in the printed edition of the DDC

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