Shapley, A. H. <br/><br/>
International geophysical year, fourth supplement to the draft manua l for world days and communications /  
A.H. Shapley 
 - Colorado :    National Bureau of Standards ,    1958 
 - 20p. ;    27 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> International geophysical year -- 1958<br/> Observatorie<br/> Research