Content Provider
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
5
Digital.CSIC (Spanish National Research Council)
4
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
Ghent University Academic Bibliography
1
National Institute of Polar Research Repository, Japan
1
Pensoft Publishers
1
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
1