SMITHSONIAX MISCI-LLAXKOUS COLLECTION'S 

 \'OI.rMI-: 110. XUMP.KR 8 



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THE BEHAVIOR Ob" BAROMETRIC PRESSURE 



DURING AND AFTER SOLAR PARTICLE 



INVASIONS AND SOLAR ULTRAVIOLET 



INVASIONS 



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B. DUELL A.M. G. DUELL 



(Publication 394 J) 



CITY OF WASHIXGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



AUGUST 5. 1948 



