| Environmental Science Provider: ecampusontario open library Language: English |
| Sustainability: A Comprehensive Foundation Provider: ecampusontario open library Language: English |
| Peace and Chemistry Global Environmental Issues: Effects on the Atmosphere and the Biosphere Provider: videolectures.net Language: English |
| Climate Change: Challenges and Opportunities for Business and Society Provider: videolectures.net Language: English |
| Environmental Biology Provider: ecampusontario open library Language: English |
| The Challenge: Meeting Global Energy Demands Sustainably Provider: videolectures.net Language: English |
| Turismo e tutela del territorio Provider: university of bologna digital library Language: Italian |
| Principles of Microeconomics: OpenStax Provider: ecampusontario open library Language: English |
| TextBook: Good Agricultural Practices for greenhouse vegetable crops - FAO-ISHS Provider: university of bologna digital library Language: English |
| Atti Accademia Entomologia per approfondimenti su argomenti trattati nel corso Provider: university of bologna digital library Language: Italian |