1. Directive 76/464/EEC, Pollution Caused by Certain Dangerous Substances Discharged into the Aquatic Environment of the Community (Black List), Off. J. Eur. Commun., L129/7 (1976).
2. US Environmental Protection Agency, National Pesticide Survey. Phase I Report PB-91-125765,1990
3. US Environmental Protection Agency, National Survey of Pesticides in Drinking Water Wells. Phase II Report EPA 570/9-91-020,1992
4. Council Directive 80/778/EEC, European Union, Brussels, 1980.
5. Council Directive 91/414/EEC, European Union, Brussels, 1991.