| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| project gutenberg ebooks free download | 0.03 | 0.1 | 1435 | 24 |
| free books online project gutenberg | 0.27 | 0.9 | 5381 | 83 |
| project gutenberg ebooks app | 1.65 | 0.4 | 6433 | 77 |
| free books on project gutenberg | 1.49 | 0.8 | 3706 | 22 |
| books online free to read project gutenberg | 1.64 | 0.9 | 1915 | 25 |
| online reading books free project gutenberg | 1.13 | 0.9 | 3857 | 40 |
| read book online free project gutenberg | 1.27 | 0.9 | 5995 | 11 |
| free audio books online project gutenberg | 1.66 | 0.3 | 5288 | 67 |
