After the October Revolution in 1917, the newly formed Soviet government worked heavily to eradicate wolves and other predators during an extensive land reclamation program. During World War II, wolf populations increased, though after Nazi Germany's defeat, wolf hunts resumed. With the end of the war and the onset of aerial hunting, the USSR destroyed 42,300 wolves in 1945, 62,700 wolves in 1946, 58,700 wolves in 1947, 57,600 in 1948, and 55,300 in 1949. From 1950 to 1954, an average of 50,000 wolves were killed annually. In 1966, wolves had been successfully exterminated in 30 oblasts of the RSFSR. During this time, wolf predation on humans and livestock had dropped by a factor of ten. However, with the publishing of a Russian translation of Farley Mowatt's book "Never Cry Wolf", wolf hunts decreased in popularity. Amid public outcry, Czarist and Soviet records of wolf attacks on both livestock and people were ignored and wolf hunts decreased in number, allowing wolves to multiply. 15,900 wolves were reportedly culled from the RSFSR in 1978, compared to 7,900 two years prior. With an increase in population, twice as many wolves were culled in the 1980s than in the prior decade. Wolves became extinct in Wrangel Island in the early 1980s. In 1984, the RSFSR had over 2,000 wolf hunting brigades consisting of 15,000 hunters who killed 16,400 wolves. Overall, the Soviet Union culled over 1,500,000 wolves for a cost of 150,000,000 rubles on bounties alone. With the dissolution of the Soviet Union, many wolf bounties were lowered or dropped altogether. Wolf hunting continues in Russia, at the expense of individual hunters rather than the government.