orange関東大震災の2か月後 東京で地下鉄網の整備検討の資料見つかる | NHK | 地震 https://www3.nhk.or.jp/news/html/20230805/k10014154051000.html
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.