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ספרים בחינם

How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use

Archibald Williams · 2009

ספרייה ציבורית, Project Gutenberg. בלי הרשמה.

Technology -- Juvenile literatureScience -- Juvenile literature

עוד של Archibald Williams