Wallis, P. J.2020-07-311978Wallis, P. J. 1978. The popular American edition of Newton's "Principia". Harvard Library Bulletin XXVI (3), July 1978: 355-360.0017-8136https://nrs.harvard.edu/URN-3:HUL.INSTREPOS:37364352en-USJournal Article2020-07-31