by Bernard N. Lenz
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Simulation of ground-water flow and rain...
Benthic invertebrates of fixed sites in ...
Feasibility of combining two aquatic ben...
Analysis of streamflow and water-quality...
Comparison of aquatic macroinvertebrate ...
Nutrient and suspended-sediment concentr...
U.S. Geological Survey nutrient preserva...
Water-quality assessment of the Trinity ...
Water-quality assessment of the Rio Gran...
Water-quality assessment of the Ozark Pl...
Water-quality assessment of the Hudson R...
Water-quality assessment of the central ...