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Rekordy dla Protection of water resources and aquatic ecosystems



R270

Protection of water resources and aquatic ecosystems / United Nations. Economic Commission For Europe. Geneva. - New York : United Nations, 1993. - V, 50 s. ; 30 cm. - (Water Series, ISSN 1020-0886 ; no 1)

ISBN 92-1-116571-7

[000006313]