Libraries Program / USGS.
| Other author | U.S. Geological Survey Library. |
| Format | Electronic |
| Publication Info | Reston, VA : U.S. Dept. of the Interior, U.S. Geological Survey, [2011] |
| Description | 1 online resource (2 unnumbered pages) : color illustrations. |
| Supplemental Content | http://purl.fdlp.gov/GPO/gpo7742 |
| Subjects |
| Series | General information product ; 125 General information product ; 125. ^A606586 |
| General note | Title from PDF title screen (usgs.gov, viewed May 23, 2011). |
| Issued in other form | Print version: Libraries Program |
| GPO item number | 0621-O (online) |
| Govt. docs number | I 19.174:125 |