| Geographic Information System Basics Provider: ecampusontario open library Language: English |
| Nature of Geographic Information: An Open Geospatial Textbook Provider: ecampusontario open library Language: English |
| The Open Digital Archaeology Textbook Provider: ecampusontario open library Language: English |
| Handbuchordner Experimento | 8+ Provider: the siemens stiftung media portal Language: German |
| Space Systems Engineering Provider: mit opencourseware Language: English |
| Light, charges and brains Provider: university of bologna digital library Language: English |
| Precalculus: OpenStax Provider: ecampusontario open library Language: English |
| Semantic multimedia remixing Provider: videolectures.net Language: English |
| Graphic Design and Print Production Fundamentals Provider: ecampusontario open library Language: English |
| D.lgs. 3 aprile 2006, n. 152 (Codice dell'ambiente) Provider: university of bologna digital library Language: Italian |