
The Hoover Dam is called one of American’s seven modern civil engineering wonders. Hurdles to clear included building access roads, diverting the Colorado River, and creating a way to cure massive amounts of concrete quickly enough to complete the project on time. Readers will learn how what was then the world’s tallest dam was built in a region that presented challenges in geography and weather.
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لغة الإنجليزية ● شكل PDF ● صفحات 32 ● ISBN 9781502629715 ● الناشر Cavendish Square Publishing, LLC ● نشرت 2017 ● للتحميل 3 مرات ● دقة EUR ● هوية شخصية 8672714 ● حماية النسخ Adobe DRM
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