| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| history of landfill engineering | 1.83 | 0.7 | 3033 | 24 | 31 |
| history | 0.81 | 0.3 | 5790 | 48 | 7 |
| of | 1.19 | 0.2 | 8390 | 24 | 2 |
| landfill | 0.45 | 0.9 | 3220 | 2 | 8 |
| engineering | 0.03 | 1 | 3118 | 1 | 11 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| history of landfill engineering | 1.88 | 0.1 | 7969 | 98 |
