1. Seasonal runoff losses of nitrogen and phosphorus from Missouri Valley loess watersheds;Alberts;J. Environ. Qual.,1978
2. Availability of pollutants associated with suspended or settled river sediments which gain access to the Great Lakes;Armstrong,1979
3. Project Hypo — an introduction;Burns,1972
4. Project Hypo — an introduction;Burns,1972
5. Nutrient transport in surface runoff as influenced by soil cover and seasonal periods;Burwell,1975