Feynman, Richard P.  1918-1988. <br/><br/>
Six not-so-easy pieces :  Einstein's relativity, symmetry, and space-time / 
Richard P. Feynman ; originally prepared for publication by Robert B. Leighton and Matthew Sands ; new introduction by Roger Penrose. 
 - Reading, Mass. :  Addison-Wesley Pub.,  c1997. 
 - xxvii, 152 p. :  ill. ;  24 cm. 
 - Helix books .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0201150255 
<br/><br/><label>LCCN: </label>96047811 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Symmetry (Physics)<br/>Special relativity (Physics)<br/>Space and time.
<br/><br/><label>LC Class. No.: </label>QC793.3.S9  / F49 1997 
<br/><br/><label>Dewey Class. No.: </label>530.11