There was a time when people assumed that the world was flat. Once an alternate theory was proposed, however, that conceit was challenged and, eventually, disproved. In short, theories and ideas can be potent agents of change-none more so than those that are extensively detailed in this book.
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格式 PDF ● 网页 304 ● ISBN 9781615300631 ● 编辑 Kathleen Kuiper ● 出版者 Britannica Educational Publishing ● 发布时间 2009 ● 下载 6 时 ● 货币 EUR ● ID 2411216 ● 复制保护 Adobe DRM
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