اذا لم تجد ما تبحث عنه يمكنك استخدام كلمات أكثر دقة.
Author: Piercy, Willis Duff
LoC No.: 11016967
Title: Great Inventions and Discoveries
Contents: Introduction -- The printing press -- The steam engine -- Electricity: the telegraph and the telephone -- Electricity: Lighting, transportation, and other uses -- The discovery of America -- Weapons and gunpowder -- Astronomical discoveries and inventions -- The cotton-gin -- Anæsthetics -- Steel and rubber -- Stenography and the typewriter -- The friction match -- Photography -- Clocks -- Some machines: The sewing machine. The reaper. Spinning and weaving machines -- Aeronautics.
Language: English
LoC Class: T: Technology
Subject: Inventions
Release Date: Sep 30, 2011
Copyright Status: Public domain in the USA.
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