sioc:Post

Grondbeginsels der sterrekunde のグレゴリオ暦改暦解説

cc:license http://creativecommons.org/licenses/by-sa/4.0/

ts:isPrimaryTopicOf http://hosi.org/blog?url=https://suchowan.seesaa.net/article/201401article_28.html

dct:date 2014-01-28T00:00+09:00

dct:references https://suchowan.seesaa.net/article/201304article_24.html

sioc:has_container https://suchowan.seesaa.net

sioc:has_creator http://hosi.org/TakashiSuga