| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| open library of open domain books | 0.01 | 0.8 | 1320 | 95 |
| books in the open domain | 1.5 | 0.9 | 4467 | 85 |
| open library books online | 0.92 | 0.9 | 9679 | 48 |
| free books open library | 1.09 | 0.2 | 5767 | 69 |
| download open library books | 1.48 | 0.8 | 3250 | 62 |
| free online books open library pdf books | 1.33 | 1 | 2513 | 96 |
| free online books open library | 1.57 | 0.1 | 2136 | 85 |
| public domain library books | 1.1 | 0.8 | 9289 | 71 |
| downloadable books on open library | 0.83 | 1 | 359 | 38 |
| open library free books to download | 0.3 | 0.1 | 8419 | 82 |
| free downloadable books on open library | 0.2 | 0.4 | 1607 | 45 |
| open library books pdf free ebooks | 1.89 | 0.6 | 4489 | 54 |
| what is open the books | 1.29 | 0.3 | 6115 | 20 |
| open library book search | 0.3 | 0.7 | 4591 | 98 |
| books.open | 0.56 | 0.3 | 7225 | 16 |
