| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| free online science fiction books | 1.85 | 0.2 | 170 | 88 |
| science fiction books online to read free | 1.19 | 0.5 | 3399 | 19 |
| epub free books online science fiction | 0.37 | 0.4 | 5839 | 39 |
| free science fiction books online to download | 0.8 | 0.5 | 1026 | 9 |
| free online books for adults science fiction | 1.08 | 0.8 | 7697 | 98 |
| online novels to read science fiction | 0.89 | 0.4 | 6271 | 47 |
| free science fiction books to download | 1.62 | 0.9 | 7849 | 89 |
| free books science fiction | 1.52 | 0.9 | 5504 | 37 |
| science fiction books to read | 0.59 | 0.1 | 1341 | 38 |
| free read science fiction | 0.28 | 0.8 | 913 | 69 |
| free science fiction online | 1.28 | 0.9 | 2119 | 13 |
| amazon free science fiction books | 0.66 | 0.9 | 7257 | 17 |
| free science fiction novels | 0.98 | 0.9 | 9589 | 20 |
| science fiction novels free downloads | 1.54 | 0.5 | 206 | 53 |
