 | October 2021. Archived from the original on 8 October 2021. "1450キロ離れた沖縄本島にも「軽石」漂着 小笠原の海底火山噴火の影響か". 琉球新報. 14 October 2021. Archived from the original on 14... 45 KB (1,781 words) - 22:07, 26 April 2024 |
 | 琉球新報. 2021-10-08. Archived from the original on 2021-10-08. "1450キロ離れた沖縄本島にも「軽石」漂着 小笠原の海底火山噴火の影響か". 琉球新報. 2021-10-14. Archived from the original on 2021-10-14... 11 KB (1,094 words) - 08:22, 6 October 2023 |
 | 32–35. Kato 2009, pp. 36. Kato 2009, pp. 89. Sources Kato, Yuzo (2009). 軽石: 海底火山からのメッセージ [Pumice: A message from a submarine volcano] (in Japanese).... 6 KB (627 words) - 12:02, 27 April 2024 |
Mikasa (Operator name unknown) 森林鉄道 (Industrial railway) Garuishi Tramway 軽石軌道 Haboro Colliery Railway 羽幌炭礦鉄道 Haboro Forest Railway 羽幌森林鉄道 (Industrial... 39 KB (4,003 words) - 03:55, 10 April 2024 |