1. An overview of trace element distribution patterns in water;Durum,1972
2. Reconnaissance of selected minor elements in surface waters of the United States;Durum;U.S. Geol. Surv. Circ.,1971
3. Metal concentrations in freshwater sediments — natural background and cultural effects;Förstner,1977
4. Determination of particulate phosphorus by alkaline persulfate digestion;Fuhs;Int. J. Env. Anal. Chem.,1971
5. Interactions between Sediments and Fresh Water;Golterman,1977