| Name | Last modified | Size | Description |
|---|---|---|---|
| Parent Directory | - | ||
| adobe.jpg | 2017-12-06 11:27 | 2.3K | |
| back_button.gif | 2017-12-06 11:27 | 2.6K | |
| fig1a_400.jpg | 2017-12-06 11:27 | 86K | |
| fig1a_650.jpg | 2017-12-06 11:27 | 99K | |
| footer_graphic_takePride.jpg | 2017-12-06 11:27 | 2.3K | |
| footer_graphic_usagov.jpg | 2017-12-06 11:27 | 1.9K | |
| header_graphic_spacer.gif | 2017-12-06 11:27 | 43 | |
| header_graphic_white.jpg | 2017-12-06 11:27 | 5.3K | |
| header_white.jpg | 2017-12-06 11:27 | 5.3K | |
| jpg/ | 2017-12-07 10:26 | - | |
| next_button.gif | 2017-12-06 11:27 | 2.6K | |
| pdf/ | 2017-12-07 10:26 | - | |
| shim.gif | 2017-12-06 11:27 | 43 | |
| up_arrow.gif | 2017-12-06 11:27 | 2.4K | |
| usgs_banner.gif | 2017-12-06 11:27 | 2.6K | |
