Click on the period you want to join, then click on "more details" to access link to join Hangouts Meet.
The entire collection features one volume per decade from 1900 to 2010. Each volume is more or less organized by PERSIA+GT. They are super handy e-Books. An unlimited number of students can view each book simultaneously. The platform is integrated with Google Drive, so you can download articles with citations directly to your school Drive.
Reference book about astronomy
