TECHNOLOGY
Otfinoski, Steve

Whirling Around: Helicopters Then and Now

(4) K-3 Here We Go! series. These thin volumes briefly discuss the history of helicopters and rocketry, then present random facts about their use in military conflicts, as transportation vehicles, and for exploring remote locales and outer space. Stock photographs, mostly in color, illustrate the texts, which are easy to read but fairly trite. Bib., ind.

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