油母ゆぼ頁岩けつがんではありませんでした yuboketsugandewārimasendeshita 1. Was not oil shale.; Was not shale containing oil. 敬 敬 Noun #3034799 Open Menu Add to collection... Open
油母ゆぼ頁岩けつがんでした yuboketsugandeshita 1. It was oil shale. 敬 敬 Noun #3034799 Open Menu Add to collection... Open
油母ゆぼ頁岩けつがんでしょう yuboketsuga ndeshō 1. Probably shale. 敬 敬 Noun #3034799 Open Menu Add to collection... Open