1. Council directive on pollution caused by certain dangerous substances discharged into the aquatic environment of the community;European Economic Community;Off. J. Eur. Community,1976
2. The implementation of Directive 76/464/EEC on pollution caused by certain dangerous substances discharged into the aquatic environment of the community;Department of the Environment,1985
3. Lead, Environmental Health Criteria 3;World Health Organization,1977
4. Lead and Health;Department of Health and Social Security,1980