Wieringa, K., & European Environment Agency. (1995). Environment in the European Union 1995: Report for the Review of the Fifth Environmental Action Programme: the update to the 1992 report on the state of the environment in the European Union requested by the European Commission. Luxembourg: Office for Official Publications of the European Communities.

Wieringa, Keimpe., and European Environment Agency. Environment in the European Union 1995: Report for the Review of the Fifth Environmental Action Programme: The Update to the 1992 Report On the State of the Environment in the European Union Requested By the European Commission. Luxembourg: Office for Official Publications of the European Communities, 1995.

Wieringa, Keimpe., and European Environment Agency. Environment in the European Union 1995: Report for the Review of the Fifth Environmental Action Programme: The Update to the 1992 Report On the State of the Environment in the European Union Requested By the European Commission. Luxembourg: Office for Official Publications of the European Communities, 1995.