• Soviet tagging of harp and hooded seals in the North Atlantic 

      Popov, Lev A. (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1971)
      In 1960-1968, 2 705 harp seal pups and 55 adult female harp seals were tagged in the White Sea. At Newfoundland 79 harp seal pups were tagged in 1963, and in the Jan Mayen area of the Greenland Sea 50 hooded seal pups ...