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The Second Period of Quakerism
William Charles Braithwaite
The Encyclopædia Britannica
Octonions
Alexander McAulay
The Encyclopaedia Britannica
Supplementary volume, containing biographical memoirs by Sir Francis Darwin and Professor E. W. Brown, lectures on Hill's lunar theory, etc. Ed, by F. J. M. Stratton...and J. Jackson. 1916
Sir George Howard Darwin