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Nort	Northern hydrology selected perspectives (Saskatoon, Saskatchewan, 10-12 July).     Proceedings of the Northern Hydrology Symposium 10-12 July 1990, Saskatoon, Saskatchewan [Текст] / Edit. T.D.Prowse, C.S.L.Ommanney; Minister of Supply and Services. — Saskatoon, 1991. — X,532p. : ill.
ISBN 0-662-18742-3