Content Provider
WikiBooks - Open-content textbooks
61
Biodiversity Heritage Library (BHL)
22
David Rumsey Historical Map Collection (Cartography Associates)
18
Cambridge University Press
11
UNESDOC - UNESCO Digital Library
11
Australian National University: ANU Digital Collections
6
Unknown
5
Texas A&M University Digital Repository
4
Uppsala University: Publications (DiVA)
4
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
3
Lincoln University (New Zealand): Lincoln U Research Archive
3
RePEc (Research Papers in Economics)
3
The University of Queensland: UQ eSpace
3
Aalborg University's Research Portal
2
James Cook University, Australia: ResearchOnline@JCU
2
Ohio State University (OSU): Knowledge Bank
2
Open Research Library
2
Research UNE - University of New England at Armidale, NSW Australia
2
The London School of Economics and Political Science: LSE Research Online
2
University of Copenhagen: Research
2
University of Groningen research database
2
University of Southampton: e-Prints Soton
2
University of Western Sydney (UWS): Research Direct
2
ARPI - Archivio della Ricerca dell'Università di Pisa
1
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1
Bristol University Press and Policy Press (via Crossref)
1
Charles Darwin University: CDU eSpace
1
DSpace@MIT (Massachusetts Institute of Technology)
1
Duke University Press
1
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
1
GEO-LEOe-docs (FID GEO)
1
I-Revues (E-Journals, INIST-CNRS)
1
IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis)
1
KOTRA Open Access Repository (Korea Trade-Investment Promotion Agency)
1
LaCRIS - University of Lapland Current Research System
1
Macquarie University Research Portal
1
ORA - Oxford University Research Archive
1
Oxford University Press (via Crossref)
1
Quebec College Network: ÉDUQ
1
RWTH Aachen University: RWTH Publications
1
SRUC (Scotland's Rural College): Research Portal
1
Technical University of Denmark: DTU Orbit
1
The University of Texas at Austin: Texas ScholarWorks
1
The University of Waikato: Research Commons
1
UI Press - University of Illinois Press (via Crossref)
1
University of Auckland Research Repository - ResearchSpace
1
University of Bristol: Bristol Research
1
University of Canberra Research Portal
1
University of Central Lancashire: CLOK - Central Lancashire Online Knowledge
1
University of Illinois at Urbana-Champaign: IDEALS (Illinois Digital Environment for Access to Learning and Scholarship)
1
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