Some international geophysical achievements :    an interim statemen t issued at the close of the observational phase of the International G eophysical year . 

 - London :    The Royal Society,    1958. 
 - 16 p. ;    22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> International Geophysical Year, 1957-1958.<br/> Geophysics -- England.