John Elliot Drinkwater Bethune
The Life of Galileo Galilei, with Illustrations of the Advancement of Experimental Philosophy Life of Kepler
John Elliot Drinkwater Bethune · 2013
ספרייה ציבורית, Project Gutenberg. בלי הרשמה.
Kepler, Johannes, 1571-1630Galilei, Galileo, 1564-1642