Struve, Otto,  1897-1963 <br/><br/>
Astronomy of the 20th century / 
Otto Struve and Velta Zebergs 
 - New York :  Macmillan,  c1962 
 - 544 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label> Rs. 125.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy--History
<br/><br/><label>Dewey Class. No.: </label>520.904