Einstein, Albert,  1879-1955. <br/><br/>
Relativity, the special and general theory :  a popular exposition / 
by Albert Einstein ; authorised translation by Robert W. Lawson. 
 - New York :  Wings Books,  c1961. 
 - xiii, 188 p. :  ill., ports. ;  21 cm. 
<br/><br/> Translation of: Über die spezialle und allgemeine Relativitätstheorie. 
<br/><br/><label>ISBN: </label>0517029618 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relativity (Physics)
<br/><br/><label>Dewey Class. No.: </label>530.11  / EIN