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>Beitrag des Europäischen Parlaments zum Gewasserschutz = The European Parliament's contribution to the fight against water pollution. Research and Documentation Papers, Environment, Health and Consumer Protection Series No. 2, May 1978
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Beitrag des Europäischen Parlaments zum Gewasserschutz = The European Parliament's contribution to the fight against water pollution. Research and Documentation Papers, Environment, Health and Consumer Protection Series No. 2, May 1978