Mikroelementy v vode, vzvezi i donnych osadkach Obskoy guby, Eniseyskogo zaliva i del'ty Leny i prilegayushchich oblastey Karskogo morya i morya Laptevykh (Trace elements in water, suspended matter and bottom sediments of the Ob and Yenisey estuaries and the Lena Delta and in the adjacent areas of the Kara and Laptev Seas, in Russian)