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Continue to Chat戦中戦後に天然ガス湧出の記録 日本最大の湖、琵琶湖は天然資源の宝庫だった (1/4ページ) - SankeiBiz(サンケイビズ) https://blog.40ch.net/2018/07/18/record-of-natural-gas-discharge-after-world-war-ii-largest-lake-in-japan-lake-biwa-was-a-treasure-house-of-natural-resources/