RT @hist_astro: HB to Newton’s “Principia”, but even genius takes work. Early drafts from the Newton Papers, MS Add.3965 @CamDigLib. http://t.co/YCtq1wyKSl
RT @hist_astro: HB to Newton’s “Principia”, but even genius takes work. Early drafts from the Newton Papers, MS Add.3965 @CamDigLib. http://t.co/YCtq1wyKSl