Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
history of landfills in the united states | 1.18 | 0.7 | 5776 | 97 |
first landfill in the us | 0.06 | 0.4 | 2634 | 83 |
history of landfill sites | 1.01 | 0.2 | 2439 | 24 |
how long have landfills been around | 0.18 | 0.1 | 6552 | 78 |
when was the first landfill created | 0.94 | 0.1 | 8727 | 27 |
when were landfills invented | 1.13 | 0.3 | 5049 | 55 |
history of landfill design | 0.24 | 0.1 | 413 | 56 |
how did landfill start | 0.07 | 0.2 | 9897 | 52 |
landfills in the united states | 0.59 | 0.2 | 2933 | 37 |
when did landfills become popular | 1.9 | 0.9 | 7050 | 87 |
history of landfill regulations | 1.7 | 0.7 | 6184 | 36 |
history of landfill gas | 1.53 | 0.9 | 5971 | 90 |
history of landfill management | 0.83 | 0.5 | 4013 | 29 |
history of landfill engineering | 0.99 | 0.3 | 4690 | 67 |
history of landfill tax | 1.95 | 0.2 | 945 | 86 |
history of landfill mining | 0.95 | 0.6 | 5397 | 87 |
history of landfill diversion | 0.44 | 0.9 | 2704 | 90 |
at the beginning of 2010 a landfill | 1.72 | 1 | 6554 | 70 |
historical landfill sites map | 1.47 | 0.1 | 5741 | 54 |
when did municipal landfills open | 1.22 | 0.1 | 4589 | 87 |
historic landfill site map | 0.55 | 0.3 | 469 | 69 |