TECHNOLOGY
Mann, Elizabeth

Hoover Dam

(2) 4-6 Wonders of the World series. Illustrated by Alan Witschonke. Strong on the symbolism of the Hoover Dam ("its dedication meant that the hard times were really over") but weaker on human contributions, the text nonetheless offers a clear explanation of the planning, purpose, construction, and social conditions that influenced the building of the dam. Archival photos complement sidebar oral histories. Diagrams clearly show the inside workings of the dam, allowing readers a virtual tour of the site. Ind.

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