Harwit ,Harwit  <br/><br/>
Astrophyscal Concept  
by Harwit Harwit  
 - London  John Wiley & Sons   1973  
 - xiv,561p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics 
<br/><br/><label>Dewey Class. No.: </label>510   / HAR