1. Nitrification;Alexander;Agronomy,1965
2. River Water Quality Modelling in the UK. A Review of Past and Present Use with Recommendations for Future Requirements;Crabtree,1986
3. Nitrification in rivers in the Trent Basin;Curtis;Water Res.,1974
4. Aeration at weirs;Department of Environment;Notes Water Pollut.,1973
5. Oxygen consumption of river muds;Edwards;J. Ecol.,1965