作者简介
Elevator Systems of the Eiffel Tower, 1889
Project Gutenberg · 2019
Project Gutenberg was the first provider of free electronic books, or eBooks. Michael Hart, founder of Project Gutenberg, invented eBooks in 1971 and …
The Engineering Contributions of Wendel Bollman
Project Gutenberg · 2019
Project Gutenberg was the first provider of free electronic books, or eBooks. Michael Hart, founder of Project Gutenberg, invented eBooks in 1971 and …
Tunnel Engineering: A Museum Treatment
Project Gutenberg · 2019
Project Gutenberg was the first provider of free electronic books, or eBooks. Michael Hart, founder of Project Gutenberg, invented eBooks in 1971 and …