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			1 | 
		
			
									
						Solar and lunar daily geomagnetic variations at San Fernando and Greenwich in relation to the associated electric current systems Chapman, Sydney. - Göttingen : Vandenhoeck u. Ruprecht, 1968
					
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			2 | 
		
			
									
						Julius Bartels am 6. März 1964 Chapman, Sydney. - Göttingen : Vandenhoeck & Ruprecht, 1965
					
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			3 | 
		
			
									
						The average Morphology of geomagnetic storms with sudden commencement Sugiura, Masahisa. - Göttingen : Vandenhoeck & Ruprecht, 1960
					
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			4 | 
		
			
									
						Ein einfaches Elevometer für Polarlichtbeobachtungen Chapman, Sydney. - Göttingen : Vandenhoeck & Ruprecht, 1958
					
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			5 | 
		
			
									
						The lunar and solar daily Variations of the horizontal geomagnetic vector at Greenwich, 1848 - 1913 Chapman, Sydney. - Göttingen : Vandenhoeck & Ruprecht, 1957
					
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