Reports and Maps of the Geological Survey Released Only in the Open Files, 1958
| Author | : Betsy A. Weld |
| Publisher | : |
| Total Pages | : 422 |
| Release | : 1949 |
| Genre | : Aquatic plants |
| ISBN | : |
Publications of the Geological Survey, 1879-1961
| Author | : Geological Survey (U.S.) |
| Publisher | : |
| Total Pages | : 526 |
| Release | : 1964 |
| Genre | : Geology |
| ISBN | : |
