1. SFS 4447. MPN Technique in Microbiological Examination of Water;Anonymous,1979
2. SFS 3044: metal content of water, sludge and sediment determined by atomic adsorption spectroscopy, atomization in flame;Anonymous,1980
3. SFS 3047: metal content of water, sludge and sediment determined by atomic adsorption spectroscopy, atomisation in flame;Anonymous,1980
4. Standard Methods for the Examination of Water and Wastewater (Method No: 3500-Fe);Anonymous,1992
5. SFS-EN 932-2 tests for general properties of aggregates;Anonymous,1997