%0 book part %@ %A Knauth, H.-D.,Sturm, R. %D 1990 %J Estuarine water quality management: monitoring, modelling and research - Coastal and estuarine studies %N %P 421-428 %T Use of nonvolatile chlorinated hydrocarbons as anthropogenic tracers for estimating the contribution of the rivers Weser and Elbe to the pollution of the German Bight %U %X