The True Proportion of the Circle to the Square, Circumscribed Expressed in Rational Numbers, by Gothofredus Gulielmus Leebnitius, Englished From the Leipsick Acta Eruditorum Number II.
Philosophical Collections of the Royal Society of London
doi 10.1098/rscl.1682.0031
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Date
February 1, 1682
Authors
Unknown
Publisher
The Royal Society