The Panama Canal

3-6 ┊ 2792 words ┊ ◄))
The Panama Canal








3-6, 2792 words, 23 minutes audio time.

This title explores and explains how the Panama Canal was built. The canal’s construction is described in terms of the engineering process. The book explores why the canal was built and describes the design stages and technologies used during construction. The book also describes the challenges builders faced while building the canal.

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Lib-html历史发明科学技术自然科学

The Great Wall of China

2018-8-13 17:10:20

Lib-html历史发明科学技术自然科学

The Great Wall of China

2018-8-13 17:10:20