| Author: | Gabrielson, F.C., Jr., A.M. Malatino, and G.J. Santa Cruz. |
| Title: | Correlation of seasonal variations in phosphorous and nitrogen species in Upper Black Warrior River with duckweed. |
| Publisher: | University of Alabama, School of Mines and Energy Development. |
| Keywords: | Black Warrior River, Duckweed, Aquatic weeds |