Engineering Achievements of the 20th Century
http://www.greatachievements.org/
Each achievement is presented with a brief introduction, timeline, and historical essay. The "top 20" are: electrification, automobile, airplane, water supply and distribution, electronics, radio and television, agricul tural mechanization, computers, telephone, air conditioning and refrigeration, highways, spacecraft, Internet, imaging, household appliances, health technologies, petroleum and petrochemical technologies, laser and fibe r optics, nuclear technologies, and high-performance materials
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