The Knowledgebook everything you need to know to get by in the 21st Century.
A comprehensive, visual reference, enhanced by two thousand photographs and illustrations, provides information on all major fields of knowledge and includes timelines, sidebars, cross-references, and other useful features.
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| 格式: | 图书 |
| 语言: | English |
| 出版: |
Washington, D.C.
National Geographic Society
2007.
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