WHEN Dr. S. P. Langley, Secretary of the Smithsonian Institution, established the Children's Room in that great museum, he took for his motto, "Knowledge begins in wonder, " and he put into this room a selection of specimens especially intended to excite interest in the young mind.
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语言 英语 ● 格式 EPUB ● ISBN 9788834128800 ● 文件大小 0.9 MB ● 出版者 JH ● 发布时间 2019 ● 下载 24 个月 ● 货币 EUR ● ID 7020062 ● 复制保护 无
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