Content Provider
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
149
WikiBooks - Open-content textbooks
29
UNESDOC - UNESCO Digital Library
6
De Gruyter
2
Edinburgh University Press
2
IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis)
2
IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository)
2
Queen's University, Ontario: QSpace
2
ARPI - Archivio della Ricerca dell'Università di Pisa
1
Aarhus University: Research
1
Biodiversity Heritage Library (BHL)
1
Boston University: OpenBU
1
Cambridge University Press
1
Dalhousie University: DalSpace Institutional Repository
1
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
1
JSTOR (via Crossref)
1
McGill University: eScholarship@McGill
1
Memorial University of Newfoundland: Research Repository
1
Oxford University Press (via Crossref)
1
RePEc (Research Papers in Economics)
1
Springer Nature (via Crossref)
1
UI Press - University of Illinois Press (via Crossref)
1
University of Cambridge, Department of Earth Sciences: ESC Publications
1
University of Malta: OAR@UM
1
University of St Andrews: Research Portal
1
University of Victoria (Canada): UVicDSpace
1
Unknown
1