| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| online reading books free project gutenberg | 0.74 | 0.3 | 1166 | 62 |
| free books online project gutenberg | 1.31 | 1 | 8349 | 19 |
| gutenberg project books online | 0.94 | 0.3 | 7062 | 44 |
| read free books online gutenberg | 0.93 | 0.8 | 9658 | 57 |
| free books project gutenberg | 0.77 | 0.1 | 5555 | 15 |
| project gutenberg free books download | 1.66 | 0.4 | 9938 | 51 |
| free online books gutenberg | 1.22 | 0.4 | 3000 | 59 |
| free downloadable books on project gutenberg | 2 | 0.1 | 1560 | 26 |
| free book sites project gutenberg | 0.37 | 0.8 | 8172 | 34 |
| free gutenberg books to read | 0.53 | 0.8 | 6349 | 18 |
| gutenberg org free books | 1.93 | 0.9 | 2474 | 58 |
| gutenberg project book library | 0.88 | 0.1 | 6712 | 7 |
