| oil and gas english book | 1.12 | 1 | 5928 | 24 | 5 |
| oil and gas book | 0.85 | 0.9 | 4793 | 16 | 8 |
| english for oil and gas pdf | 1.62 | 0.2 | 9138 | 27 | 69 |
| oil and gas books pdf | 0.61 | 1 | 8723 | 21 | 25 |
| oil and gas textbook | 1.8 | 0.3 | 4812 | 20 | 6 |
| english oil and gas | 0.06 | 0.4 | 5207 | 19 | 74 |
| oil and gas pdf | 0.41 | 0.8 | 1233 | 15 | 53 |
| books about oil and gas industry | 1.9 | 0.2 | 460 | 32 | 75 |
| oil and gas law book | 1.69 | 0.2 | 7629 | 20 | 85 |
| english for the oil and gas industries | 1.47 | 0.1 | 9270 | 38 | 38 |
| oil and gas vocabulary pdf | 0.25 | 0.7 | 5127 | 26 | 43 |
| oil and gas publications | 1.12 | 0.1 | 1741 | 24 | 29 |
| green book oil and gas | 0.25 | 0.9 | 2447 | 22 | 46 |
| introduction to oil and gas | 1.7 | 0.1 | 182 | 27 | 88 |
| the oil and gas | 1.97 | 0.1 | 4904 | 15 | 22 |
| oil and gas accounting textbook pdf | 1.85 | 0.2 | 3136 | 35 | 70 |
| oil and gas overview | 1.27 | 0.7 | 5760 | 20 | 87 |
| oil and gas investing books | 1.01 | 0.8 | 2503 | 27 | 62 |
| the oil and gas journal | 0.29 | 0.3 | 3805 | 23 | 89 |
| oil and gas engineering guide 3rd edition | 1.54 | 1 | 4440 | 41 | 98 |
| origin of oil and gas pdf | 1.17 | 0.7 | 7755 | 25 | 58 |
| oil and gas handbook | 1.15 | 0.5 | 8291 | 20 | 18 |
| oil and gas exploration pdf | 0.38 | 0.6 | 9852 | 27 | 48 |
