TY  - BOOK
TI  -  International geophysical year world data center A, solar activity h igh altitude observatory : :  intermediate report of prominence (Filame nt) Activity / 
U1  -  IGY (08) 10 /22 
PY  - 1963///
CY  -  Washington : 
PB  -  National Academy of Science , 
KW  -  Solar activity
KW  -  Statistical services
ER  -