Proceedings and documentation of the symposium organized by the United Nations Economic Commission for Europe and held from 2 to 15 May 1971 in Prague (Czechoslovakia) : with a study tour to the region of Ostrava (Czechoslovakia) and Katowice (Poland).
By: ECE Symposium on Problems Relating to Environment (1971 : Prague) ECE Symposium on Problems Relating to Environment (1971 : Prague) ECE Symposium on Problems Relating to Environment (1971 : Prague).
Contributor(s): United Nations. Economic Commission for Europe. United Nations. Economic Commission for Europe.
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"United Nations publication. Sales number: E.71.II.E.6."
Includes bibliographical references.
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