Polar bears : proceedings of the third Working Meeting of the Polar Bear Specialist Group, organized by the Survival Service Commission of IUCN, 7-10 February 1972, at Morges, Switzerland 1972
Polar bears : proceedings of the 2nd Working Meeting of Polar Bear Specialists organized by IUCN at Morges, Switzerland, 2-4 February 1970 1970
Polar bears : proceedings of the seventh Working Meeting of the IUCN Polar Bear Specialist Group and proceedings of the sixth working Meeting of the IUCN Polar Bear Specialist Group 1980
Polar bears : proceedings of the eighth Working Meeting of the IUCN/SSC Polar Bear Specialist Group, held at the Ministry of Environment, Oslo, Norway, 15-19 January 1981 1985
Polar bears : proceedings of the ninth Working Meeting of the IUCN/SSC Polar Bear Specialist Group held at Edmonton, Canada, 9-11 August 1985 1986
Polar bears : proceedings of the Technical Workshop of the IUCN Polar Bear Specialists Group, Grand Canyon, Arizona, 16-18 February 1983 1984
