科學史算術 天文・曆術

= ID : u79D1u5B78u53F2u7B97u8853_u5929u6587u30FBu66C6u8853
=Name : 科學史算術 天文・曆術
←subject :


mode=simple user= lang= XEmacs 21.4 (patch 22) "Instant Classic" [Lucid] (x86_64-unknown-linux, Mule) CHISE v0.25 (Ōkawara) of Sat May 20 2023 on ruimoku-backend