Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
58
Hathi Trust Digital Library
9
The University of Utah: J. Willard Marriott Digital Library
7
APS Digital Library (American Philosophical Society)
1
David Rumsey Historical Map Collection (Cartography Associates)
1
Harvard University: Harvard Collections
1
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
1
SLUB Dresden: Collections (Saxon State Library - State and University Library Dresden)
1
The University of Alabama at Birmingham: UAB Libraries' Digital Collections
1
USGS Science Data Catalog (via DataONE)
1
University of Michigan: Digital Collections
1
University of the Pacific, McGeorge School of Law: Scholarly Commons
1
University of the Pacific: Scholarly Commons
1