Sullivan, Walter. <br/><br/>
Assault on the unknown :  the International Geophysical Year / 
Walter Sullivan. 
 - New York :  McGraw-Hill,  c1961. 
 - xiv, 460 p. :  ill. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International Geophysical Year, 1957-1958.
<br/><br/><label>Dewey Class. No.: </label>551.0621  / SUA 1961