Astronomy: OpenStax Provider: ecampusontario open library Language: English

Light, charges and brains Provider: university of bologna digital library Language: English

Presentazione Giovannini Provider: university of bologna digital library Language: English

Pot svetlobe iz vesolja do nas Provider: videolectures.net Language: Slovene

University Physics Volume 3: OpenStax Provider: ecampusontario open library Language: English

Formation of stars, clusters, variable stars Provider: university of bologna digital library Language: English

Evoluzione Stellare 2011 Provider: university of bologna digital library Language: Italian

Hands-On Astronomy: Observing Stars and Planets Provider: mit opencourseware Language: English

The Early Universe Provider: mit opencourseware Language: English

Evidence for AGN Feedback in Galaxy Clusters and Groups Provider: university of bologna digital library Language: English