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In page Duck and Cover (film):
"The solution was the duck and cover campaign, of which Duck and Cover was an integral part. Shelters were built, drills were held in towns and schools, and the film was shown to schoolchildren. According to the United States Library of Congress (which declared the film "historically significant" and inducted it for preservation into the National Film Registry in 2004), it "was seen by millions of schoolchildren in the 1950s."
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