| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| history of lead poisoning in the us | 1.69 | 0.7 | 8849 | 54 |
| history of lead poisoning in the usa | 1.48 | 0.9 | 798 | 47 |
| lead poisoning history timeline | 0.66 | 0.1 | 8499 | 84 |
| lead poisoning in the us | 0.63 | 0.9 | 6182 | 20 |
| lead poisoning in the united states | 1.7 | 0.4 | 8260 | 18 |
| when was lead poisoning discovered | 0.9 | 0.5 | 2945 | 26 |
| lead poisoning in usa | 0.92 | 0.8 | 6267 | 98 |
| history of lead exposure | 1.34 | 1 | 6756 | 75 |
| who discovered lead poisoning and when | 1.3 | 0.3 | 7034 | 6 |
| lead poisoning in the news | 0.15 | 0.6 | 113 | 38 |
| when did people realize lead was poisonous | 0.15 | 0.3 | 8254 | 52 |
| do people before 1995 have lead poisoning | 1.69 | 0.7 | 2151 | 24 |
| when did we know lead was poisonous | 1.68 | 0.2 | 2273 | 18 |
| when was lead discovered to be toxic | 0.68 | 0.3 | 1386 | 62 |
| lead poisoning know the facts | 1.08 | 0.2 | 1484 | 81 |
| etiology of lead poisoning | 0.65 | 0.6 | 5331 | 15 |
| lead poisoning recent cases | 1.27 | 0.3 | 8093 | 23 |
| lead poisoning statistics united states | 0.05 | 0.6 | 534 | 2 |
| when was lead toxicity discovered | 1.03 | 0.9 | 9289 | 54 |
| statistics on lead poisoning | 0.07 | 1 | 7901 | 98 |
| facts about lead poisoning | 0.07 | 0.8 | 271 | 18 |
