1. Phosphorus;Armstrong,1965
2. Kinetics of orthophosphate uptake by phytoplankton populations in Lake Winnebago;Bartell;Transactions of the Wisconsin Academy of Sciences, Arts, and Letters,1972
3. Fractionation of soil phosphorus;Chang;Soil Science,1957
4. Phosphorus flux and cycling in estuaries;Correll,1975
5. Phosphate adsorption reactions with clay minerals;Edzwald;Environmental Science and Technology,1976