1. Freshwater ecoregions of North America: A conservation assessment;Abell,2000
2. Adjustment to Quarternary climatic change by Colorado River in central Texas;Baker;Journal of Geology,1977
3. Rolling rivers An encyclopedia of America's rivers;Bartlett,1984
4. Texas aquatic ecoregion project: An assessment of least disturbed streams. I. Presentation of results. Draft copy;Bayer,1992
5. Secondary production of aquatic insects;Benke,1984