| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| open library vs project gutenberg | 1.52 | 0.3 | 5703 | 94 |
| project gutenberg open library | 0.86 | 0.3 | 5443 | 17 |
| project gutenberg online library | 1.95 | 0.9 | 9649 | 70 |
| gutenberg project book library | 0.13 | 0.7 | 6777 | 18 |
| project gutenberg digital library | 1.02 | 0.5 | 5357 | 83 |
| project gutenberg electronic public library | 1.54 | 0.1 | 1504 | 17 |
| project gutenberg free ebooks library | 1.22 | 1 | 5982 | 92 |
| project gutenberg library - books in english | 0.55 | 0.9 | 6970 | 97 |
| gutenberg free online library | 0.81 | 0.5 | 7155 | 30 |
| project gutenberg open audiobook collection | 0.98 | 0.1 | 340 | 70 |
| gutenberg library free books | 1.22 | 0.3 | 5688 | 80 |
| project gutenberg wikipedia alternatives | 1.94 | 0.6 | 2846 | 45 |
| gutenberg project books online | 1.83 | 0.9 | 1028 | 26 |
| project gutenberg free pdf | 1.5 | 0.6 | 285 | 39 |
| books free online project gutenberg | 0.47 | 0.9 | 8025 | 79 |
| the gutenberg project free books | 0.81 | 0.8 | 5875 | 46 |
| the project of gutenberg | 0.37 | 0.6 | 7852 | 95 |
| read free books project gutenberg | 0.01 | 0.3 | 7123 | 43 |
| books online free to read project gutenberg | 1.62 | 0.1 | 6020 | 66 |
