- Northumbria Research Link
- NordForsk
- NERC Open Research Archive
- NERC Open Research Archive
- NERC Open Research Archive
- National Model United Nations
- MUSE - Museo delle Scienze
- MIT Press Journals
- Minnesota Urban Debate League
- Middlesex University Research Repository
- Maynooth University ePrints and eTheses Archive
- MATEC Web of Conferences
- Macquarie University ResearchOnline
- LPPM-UNILA Institutional Repository (LPPM
- Lancaster EPrints
- Lancaster EPrints
- Laboratory for Anthropogenic Landscape Ecology
- Konrad-Adenauer
- Jordan University of Science and Technology
- Joint Ocean Commission Initiative
