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Copernicus Publications: E-Journals
2
German Aerospace Center: elib - DLR electronic library
2
University of Potsdam: publish.UP
2
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Niedersächsisches Online-Archiv NOA
1
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