Carnegie Institution of Washington. Division of Historical Research. Section of the History of Science

Isis ◽  
1936 ◽  
Vol 26 (1) ◽  
pp. 139-146
Isis ◽  
1935 ◽  
Vol 22 (2) ◽  
pp. 435-439
Author(s):  
George Sarton ◽  
Alexander Pogo ◽  
Mary Catherine Welborn ◽  
Frances Siegel

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