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ספרים בחינם

Miscellanea Curiosa, Vol. 1 Containing a collection of some of the principal phaenomena in nature, accounted for by the greatest philosophers of this age

Edmond, 1656-1742 Halley · 2015

ספרייה ציבורית, Project Gutenberg. בלי הרשמה.

Natural historyVoyages and travels -- Early works to 1800Science -- Early works to 1800