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10by Drogaitsev,A. A.“... to evaluating the prospects of forecasting ice conditions on the Northern Sea Route for the coming navigational...”
Published 1971
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11by Tsurikov,V. L.“... line thrown on drift ice, navigational method with the aid of coastal objects, radar and radar...”
Published 1970
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12“... and global circulation to navigation in ice-covered seas. Observations from single stations are intrinsically...”
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