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Astronomical Yearbook 2020 / Author: Astronomical Yearbook Editorial Committee
Click here for details of the book *Seibundo Shinkosha official website
https://www.seibundo-shinkosha.net/book/astronomy/35378/
Astronomical Yearbook 2020 / Author: Astronomical Yearbook Editorial Committee
Click here for details of the book *Seibundo Shinkosha official website
https://www.seibundo-shinkosha.net/book/astronomy/35378/