Colloquy on Environment in Europe : Co-operation between Local and Regional Authorities (1991. Siófok, Hungary)
Environment in Europe : co-operation between local and regional authorities : working documents and conclusions of the colloquy on environment in Europe : co-operation between local and regional authorities (Siófok, Hungary, 5-6 June 1991). — Strasbourg : Council of Europe Press, 1992. — CIDIMA. — 134 p. : gráf., il. ; 29 cm. — ( Studies and texts ;
21) En port.: standing conference of local and regional authorities of Europe ISBN 92-871-2058-7 1. Política ambiental.2. Europa. 9.0.0
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