2020年11月11日。
交詢社ビル*1。中央区銀座６丁目*2。
*1:http://www.kojunsha.or.jp/ See eg. https://ja.wikipedia.org/wiki/%E4%BA%A4%E8%A9%A2%E7%A4%BE See also https://sumita-m.hatenadiary.com/entry/2022/05/17/152311
*2:See also https://sumita-m.hatenadiary.com/entry/2022/03/11/084004 https://sumita-m.hatenadiary.com/entry/2022/04/08/084707 https://sumita-m.hatenadiary.com/entry/2022/05/08/142023 https://sumita-m.hatenadiary.com/entry/2022/05/13/125156 https://sumita-m.hatenadiary.com/entry/2023/05/02/110814 https://sumita-m.hatenadiary.com/entry/2023/10/12/022301
