Bol. soviet encyclical in 51 t. In Russian (ask us if in doubt)/Bol. Sovet. entsikl. v 51 t. Vol. 1-49: from A to Z. Volume 50: USSR. Volume 2: 40852 illustrations and 2362 maps, each volume contains 500-600 illustrations and maps. SKUalbf6e71078c74c9950.