Slooff Wde Zwart D2012-12-122012-12-121991-03-31http://hdl.handle.net/10029/259155This report contains a proposal for an indicator to measure the effectivity of the environmental policy with regard to the theme "Verspreiding" of the Directorate-General for Environmental Protection. It is recommended to use a method which indicates the toxicity of organic pollutants as present in the environment. The method combines the advantages of both chemical and biological methods.<br>27 pnl0791-1pt-waardemilieubeleidsindicatorverspreidingtoxische stoffenorganischbiomonitoringpt-valueindicator to measure the effectivity of the environmental policy;Report2012-12-12