00565nam a2200205Ia 4500 CTU_85214 210402s9999 xx 000 0 und d 338.2 S193 Sampson, Anthony The Seven Sisters : The greate oil companies and the world they made Anthony Sampson London Hodder and Stoughton 1975 Petroleum Industry and Trade History Năm Trung tâm Học liệu Trường Đại học Cần Thơ