| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| project gutenberg ebooks free download | 0.3 | 0.9 | 7897 | 65 |
| free books online project gutenberg | 0.4 | 0.2 | 8792 | 80 |
| project gutenberg ebooks app | 0.13 | 0.6 | 2535 | 54 |
| free books on project gutenberg | 1.14 | 0.8 | 2290 | 34 |
| books online free to read project gutenberg | 0.24 | 0.3 | 6557 | 36 |
| online reading books free project gutenberg | 1.37 | 0.8 | 4056 | 64 |
| read book online free project gutenberg | 1.08 | 0.9 | 7714 | 91 |
| free audio books online project gutenberg | 1.87 | 0.8 | 6411 | 63 |
