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Seifert, S.: Johann Samuel Ersch, der Begründer der neueren Bibliographie in Deutschland : seine Entwicklung bis zum 'Allgemeinen Repertorium der Literatur' (1968) 0.01

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Gordon, T.J.; Helmer-Hirschberg, O.: Report on a long-range forecasting study (1964) 0.00

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Date: 22. 6.2018 13:24:08
22. 6.2018 13:54:52

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