Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
date of invention of the printing press | 1.43 | 0.7 | 515 | 49 |
gutenberg printing press invention date | 0.23 | 0.9 | 5784 | 1 |
steam powered printing press invention date | 1.7 | 0.9 | 6382 | 45 |
gutenberg printing press invention | 1.08 | 0.6 | 3994 | 77 |