It happens in Russia seven years forced labour in the Siberian goldfields - Petrov, Vladimir (Eyre and Spottiswoode, 1951)
Keywords: Colonies pénitentiaires soviétiques; Or - Mines et extraction - Sibérie; Prisonniers - Travail - Sibérie; Convict labor -- Russia (Federation) -- Siberia; Gold mines and mining -- Russia (Federation) -- Siberia; Penal colonies -- Russia (Federation)