| Title: | The Circle of Knowledge: Essential Facts of Everyday Interest in Nature, Geography, History, Travel, Government, Science, Invention, Education, Language, Literature, Fine Arts, Philosophy, Religion, Industry, Biography, Human Culture, and Universal Progress |
| Alternate title: | The Circle of Knowledge: A Classified, Simplified, Visualized Book of Answers |
| Editor: | Ruoff, Henry W. (Henry Woldmar), 1865-1935 |
| Note: | Toronto: J. A. Hertel Co.; Boston et al.: Standard Pub. Co., 1917 |
| Link: | Gutenberg text and illustrated HTML |
| Stable link here: | https://onlinebooks.library.upenn.edu/webbin/book/lookupid?key=olbp79391 |
| Subject: | Encyclopedias and dictionaries |
| Call number: | AG5 .R885 1917 |
| Other copies: | Look for editions of this book at your library, or elsewhere. |
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