Lev Kamenev arrested in 1902, ending his formal education. From that point on, he worked as a professional revolutionary, and was active in the capital St. Petersburg, Moscow and Tiflis. He adopted the surname Kamenev during this period. In the early 1900s, he married Olga Bronstein, a fellow Marxist (and younger sister of Leon Trotsky, who had also adopted a different surname). The couple had two sons together. Kamenev joined the Communists in 1901. He took a brief trip abroad in 1902, meeting Russian social democratic leaders living in exile, including Vladimir Lenin, whose adherent and close associate he became. He also
Lev Zinder family (without Lev Rafailovich) moved from town to town: Kirov, Sevetek, Vladimir. In 1944 they returned to Leningrad and Lev Zinder got the medal for Victory over Germany. Later, since 1945 till 1995 Lev Zinder taught at Leningrad State University and on 23 August he died. He was buried at Serafim’s cemetery. Lev Rafailovich Zinder famous scientific proceedings: Lev Zinder Lev Rafailovich Zinder (8 January 1904 - 23 August 1995) was Russian linguist in German philology. Lev Zinder was born in 1904 in Kiev. When he was eight, he entered the third gymnasium in Kiev, but finished only six forms