Keel, William C. , <br/><br/>
The sky at Einstein's feet / 
William C. Keel. 
 - xiii, 246 pages :  illustrations ;  24 cm. 
 - Springer-Praxis books in popular astronomy .
<br/><br/><label>ISBN: </label>0387261303 9780387261300 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General relativity (Physics) --Popular works.<br/>Astrophysics --Popular works.
<br/><br/><label>LC Class. No.: </label>QC173.57   / .K43 2006