http://lod.ehri-project-test.eu/hasCopyRelations/997a0128-1ac3-11f0-a5c6-e3d285ab5c44 an entity of type: HasCopyRelation
"Documentation of the underground organizations of the Communist Party and the Komsomol movement in Belorussia, 1941-1944" was copied from "Партийные подпольные органы Пинской области в годы Великой Отечественной войны 1941-1945гг."