| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| list of copyright free books | 0.11 | 0.8 | 9642 | 49 |
| copyright free books online | 0.04 | 0.5 | 8266 | 38 |
| copyright book for free | 0.89 | 0.6 | 4280 | 34 |
| free books no copyright | 1.12 | 1 | 8280 | 50 |
| copyright free books pdf | 0.58 | 0.2 | 5847 | 43 |
| what books are out of copyright | 1.32 | 0.6 | 6520 | 24 |
| copyright list of novels | 0.09 | 0.2 | 2670 | 10 |
| copyright free book downloads | 1.21 | 0.6 | 2664 | 20 |
| copyright free children's books | 0.23 | 0.4 | 5738 | 20 |
| copyright free books to sell | 0.69 | 0.7 | 2676 | 29 |
| us copyright for books | 1.99 | 0.1 | 1442 | 22 |
| copyright format for books | 0.98 | 0.2 | 3143 | 85 |
| book copyrights for sale | 1.56 | 0.5 | 4285 | 62 |
