| Verified | Status | Citation | Memento |
|---|---|---|---|
| 2017.03.06 | a | http://www.ussc.gov/sites/default/files/pdf/research-and-publications/annual-reports-and-sourcebooks/2015/FigureG.pdf |
|
| Verified | Status | Citation | Memento |
|---|---|---|---|
| 2017.03.06 | a | http://www.ussc.gov/sites/default/files/pdf/research-and-publications/annual-reports-and-sourcebooks/2015/FigureG.pdf |
|