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Al Ubaylah is a settlement about 150 miles (250 km) southwest of the town of Yabrin in the Eastern Region in Saudi Arabia. Petroleum in exploitable quantities was not found here in the 1950s by Aramco according to the USGS.〔(USGS )〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Al Ubaylah」の詳細全文を読む スポンサード リンク
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