 Complete the following phrase:  The Gulag Archipelago was composed from 1958 to 1967, and has sold over thirty million copies in thirty-five languages. It was a three-volume, seven-part work on the Soviet prison camp system, which drew from Solzhenitsyns experiences and the testimony of 256 former prisoners and Solzhenitsyns own research into the history of the Russian penal system. It discusses the systems origins from the founding of the Communist regime, with Vladimir Lenin having responsibility, detailing interrogation procedures, prisoner transports, prison camp culture, prisoner uprisings and revolts such as the 