| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| certified reference material pdf | 1.43 | 0.1 | 3756 | 36 | 32 |
| certified | 1.66 | 0.4 | 4910 | 20 | 9 |
| reference | 1.04 | 0.5 | 5598 | 5 | 9 |
| material | 1.67 | 0.3 | 9414 | 53 | 8 |
| 0.79 | 0.5 | 509 | 86 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| certified reference material pdf | 1.14 | 0.6 | 2816 | 2 |
