| Biology: OpenStax Provider: ecampusontario open library Language: English |
| Practical Meteorology: An Algebra-based Survey of Atmospheric Science Provider: ecampusontario open library Language: English |
| College Physics: OpenStax Provider: ecampusontario open library Language: English |
| Environmental Science Provider: ecampusontario open library Language: English |
| Sustainability: A Comprehensive Foundation Provider: ecampusontario open library Language: English |
| The Art of Insight in Science and Engineering: Mastering Complexity Provider: mit opencourseware Language: English |
| Microbiology: Canadian Edition Provider: ecampusontario open library Language: English |
| Concepts of Biology: OpenStax Provider: ecampusontario open library Language: English |
| Chemistry: OpenStax Provider: ecampusontario open library Language: English |
| D.lgs. 3 aprile 2006, n. 152 (Codice dell'ambiente) Provider: university of bologna digital library Language: Italian |