http://lod.ehri-project-test.eu/isCopyOfRelations/d81512ff-1ac3-11f0-a5c6-e3d285ab5c44 an entity of type: IsCopyOfRelation
"Documentation of the underground organizations of the Communist Party and the Komsomol movement in Belorussia, 1941-1944" was copied from "Комсомольские подпольные органы Витебской области в годы Великой Отечественной войны 1941-1945гг."