1. Data from Selected U.S. Geological Survey national stream water-quality monitoring networks (WQN) [CD-ROM];Alexander;U.S. Geol. Surv. Open File Rep.,1996
2. County level estimates of nitrogen and phosphorus fertilizer use in the United States, 1945 to 1985;Alexander;U.S. Geol. Surv. Open File Rep.,1990
3. Erf1-Enhanced river reach file 1.2;Alexander;U.S. Geol. Surv. Open File Rep.,1999
4. Effect of stream channel size on the delivery of nitrogen to the Gulf of Mexico;Alexander;Nature,2000
5. Differences in phosphorus and nitrogen delivery to the Gulf of Mexico from the Mississippi River Basin;Alexander;Environ. Sci. Technol.,2008