Protection of water resources and aquatic ecosystems
By: Economic Commission for Europe.
Contributors: United Nations. Economic Commission for Europe.
Series: Water series,; no. 1; Water series (United Nations. Economic Commission for Europe) ;; no. 1.
Publisher: United Nations
Published: 1993
Place of publication: New York
Language: eng
Number of pages: 50
Subjects: Water quality management.; Water -- Pollution.; Aquatic ecology.
Notes: "ECE/ENVWA/31."
United Nations publication sales no. E.93.II.E.23.