The Sky at Einstein's Feet - Keel, William C.; SpringerLink (Online service) (New York, NY : Praxis Publishing Ltd., 2006)
Keywords: General relativity (Physics) -- Popular works; Astrophysics -- Popular works; Physics; Astronomy, Astrophysics and Cosmology; Astronomy; Astrophysics; Extraterrestrial Physics, Space Sciences; Relativity and Cosmology