A comparison of sunspot-numbers, terrestrial-magnetic activity, and long-wave radio signal-strength

1930 ◽  
Vol 35 (1) ◽  
pp. 49 ◽  
Author(s):  
L. W. Austin
Author(s):  
Dian Zhang ◽  
Zhong Ming ◽  
Gang Liu ◽  
Kezhong Lu ◽  
Rui Mao ◽  
...  

Author(s):  
Sukhumarn Archasantisuk ◽  
Takahiro Aoyagi ◽  
Tero Uusitupa ◽  
Minseok Kim ◽  
Jun-ichi Takada

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