Chapman, Sydney. <br/><br/>
IGY :  year of discovery : the story of the International Geophysical Year / 
by Sydney Chapman. 
 - Ann Arbor :  University of Michigan Press,  [c1959]. 
 - 111 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International Geophysical Year, 1957-1958.