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The brown bear, Ursus arctos Linnaeus, 1758 was exterminated all over lowland Poland and in Sudety Mts. remaining only in Carpathian Mts. where its range declined further till the World War I period. A small population survived within some isolated sites and started to grow again after the World War II with its territorial expansion markedly accelerated since seventies. The number of brown bears in Poland increased 4-5 times within 1945-1982 period. The population number in 1982 was estimated at 70-75 individuals.

Chromosomes of some species of vespertilionid bats. IV. New data on the plecotine bats