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ספרים בחינם

Philosophical Transactions of the Royal Society - Vol 1 - 1666 Giving some Accompt of the present Undertakings, Studies, and Labours of the Ingenious in many considerable parts of the World

Various · 2009

ספרייה ציבורית, Project Gutenberg. בלי הרשמה.

Science -- Periodicals

עוד של Various