| google scholar academic books | 0.45 | 0.5 | 3436 | 29 | 69 |
| google scholar books pdf | 1.87 | 0.8 | 691 | 24 | 65 |
| google scholar books online | 0.93 | 0.6 | 1778 | 27 | 20 |
| google scholar books free pdf | 0.5 | 0.4 | 6989 | 29 | 12 |
| google scholar books free | 1.02 | 0.6 | 1247 | 25 | 98 |
| google scholar download books | 0.47 | 0.1 | 5315 | 29 | 78 |
| google scholar books search | 0.17 | 0.3 | 4523 | 27 | 100 |
| google scholar books review | 0.47 | 0.7 | 2688 | 27 | 17 |
| google scholar academic papers | 1.43 | 0.7 | 7266 | 30 | 99 |
| google scholar books free download | 1.96 | 0.3 | 2886 | 34 | 59 |
| google scholar academic articles | 0.19 | 0.6 | 9300 | 32 | 94 |
| google scholar academic journals | 0.72 | 0.6 | 4310 | 32 | 42 |
| google scholar academic search | 0.03 | 0.8 | 1233 | 30 | 80 |
| google scholar uk books | 0.11 | 0.5 | 3546 | 23 | 72 |
| google scholar books library | 1.48 | 1 | 5169 | 28 | 96 |
| google scholar and textbooks | 1.83 | 1 | 9298 | 28 | 7 |
| google scholar for students | 0.29 | 0.5 | 703 | 27 | 59 |
