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20
L. B. Hayward, J. K. Ellwood, G. B. M. Zerr, I. L. Beverage and John T. FairchildVolume:
1
Language:
english
Journal:
The American Mathematical Monthly
DOI:
10.2307/2971073
Date:
July, 1894
File:
PDF, 151 KB
english, 1894