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Google圖書搜尋
A Determination of the Solar Parallax
David Gill
其他書名
From Observations of Mars Made at the Island of Ascension in 1877
出版
The Society
, 1881
URL
http://books.google.com.hk/books?id=-STqmY5itI4C&hl=&source=gbs_api
EBook
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