International geophysical year world data center A, solar activity h igh altitude observatory :    intermediate report of prominence (Filame nt) Activity /  
1962 
 - Washington :    National Academy of Science ,    1963 
 - 46p. ;    28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Solar activity<br/> Statistical services
<br/><br/><label>Dewey Class. No.: </label>IGY (08) 10 /22