Carl sagans College courses materials

[sakthibruce]

Who is carl sagan ? http://en.wikipedia.org/wiki/Carl_Sagan

Course materials : http://loc.gov/item/cosmos000027?loclr=blogadm#about-this-item

Lecture notes     : http://loc.gov/item/cosmos000028?loclr=blogadm

A home page http://www.loc.gov/collection/finding-our-place-in-the-cosmos-with-carl-sagan/about-this-collection/#overview?loclr=blogadm