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| 1 | Title: | Those inventive Americans | |
| Creator: | National Geographic Society (U.S.) Special Publications Division. | ||
| Publication: | National Geographic Society, Washington,1971] | ||
| Notes: | Includes bibliographical references. | ||
| Call #: | T21 N277 | ||
| Extent: | 231 p. : illus. (part col.), ports. (part col.) ; 27 cm. | ||
| Subjects: | Inventors -- United States | United States -- Civilization | ||
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